1. (Québec) Plongeon raté dans lequel on tombe à plat ventre à la surface de l'eau.
2. (Québec) Plat, dégazé, en parlant généralement d'une bière.
Ma bière est flate.
3. (Belgique) Appartement d'une seule pièce spacieuse, studio, loft.
4. Se dit du ver à soie atteint de flacherie.
5. (Québec) (Populaire) Crevaison.
Les quatre fournisseurs ont fait défaut en même temps ? « Ça vous arrive parfois d'aller en auto et de faire un flat ? Imaginez-vous maintenant de faire quatre flats en l'espace d'une heure. C'est ce qui est arrivé : les quatre ont fait défaut en dedans de six mois ». (La Presse, 11 juillet 2007)
Ça arrive à manufacture les deux yeux fermés ben dur,Les culottes pas zippées, en retard... Ça dit que ça a fait un flat ou que l'char partait pas. (Réjean Ducharme et Robert Charlebois, Mon pays, c'est pas un pays, c'est un job)
(Populaire) J'ai pogné un flat.
J'ai fait un flat.
6. [adjective] Having no variations in height.
7. [adjective] (of a tire or other inflated object) Deflated, especially because of a puncture.
8. [adjective] (music) (note) Lowered by one semitone.
9. [adjective] (music) Of a note or voice, lower in pitch than it should be.
10. [adjective] (music) (voice) Without variations in pitch.
11. [adjective] Of a carbonated drink, with all or most of its carbon dioxide having come out of solution so that the drink no longer fizzes or contains any bubbles.
12. [adjective] Uninteresting.
13. [adjective] (wine) Lacking acidity without being sweet.
14. [adjective] Absolute; downright; peremptory.
15. [adjective] (slang) Describing certain features, usually the breasts and/or buttocks, that are extremely small or not visible at all.
16. [adjective] (of a battery) Unable to emit power; dead.
17. [adjective] (juggling) (of a throw) Without spin; spinless.
18. [adjective] Lacking liveliness of commercial exchange and dealings; depressed; dull.
19. [adjective] (phonetics) (dated) (of a consonant) sonant; vocal, as distinguished from a sharp (non-sonant) consonant
20. [adjective] (grammar) Not having an inflectional ending or sign, such as a noun used as an adjective, or an adjective as an adverb, without the addition of a formative suffix, or an infinitive without the sign 'to'.
21. [adjective] (golf) (of a golf club) Having a head at a very obtuse angle to the shaft.
22. [adjective] (horticulture) (of certain fruits) Flattening at the ends.
23. [adverb] So as to be flat.
24. [adverb] Bluntly.
25. [adverb] (with units of time, distance, etc) Not exceeding.
26. [adverb] Completely.
27. [adverb] Directly; flatly.
28. [adverb] (finance) (slang) Without allowance for accrued interest.
29. [noun] An area of level ground.
30. [noun] (music) A note played a semitone lower than a natural, denoted by the symbol ? sign placed after the letter representing the note (e.g., B?) or in front of the note symbol (e.g. ??).
31. [noun] (informal) (automotive) A flat tyre/tire.
32. [noun] (in the plural) A type of ladies' shoes with very low heels.
33. [noun] (painting) A thin, broad brush used in oil and watercolor/watercolour painting.
34. [noun] (swordfighting) The flat side of a blade, as opposed to the sharp edge.
35. [noun] The palm of the hand, with the adjacent part of the fingers.
36. [noun] A wide, shallow container.
37. [noun] (geometry) A subset of n-dimensional space that is congruent to a Euclidean space of lower dimension.
38. [noun] A flat-bottomed boat, without keel, and of small draught.
39. [noun] A straw hat, broad-brimmed and low-crowned.
40. [noun] (US) A railroad car without a roof, and whose body is a platform without sides; a platform car or flatcar.
41. [noun] A platform on a wheel, upon which emblematic designs etc. are carried in processions.
42. [noun] (mining) A horizontal vein or ore deposit auxiliary to a main vein; also, any horizontal portion of a vein not elsewhere horizontal.
43. [noun] (obsolete) A dull fellow; a simpleton.
44. [noun] (technical, theatre) A rectangular wooden structure covered with masonite, lauan or muslin that can be raised as a platform.
45. [verb] (poker slang) To make a flat call; to call without raising.
46. [verb] (intransitive) To become flat or flattened; to sink or fall to an even surface.
47. [verb] (intransitive) (music) (colloquial) To fall from the pitch.
48. [verb] (transitive) (music) To depress in tone, as a musical note; especially, to lower in pitch by half a tone.
49. [verb] (transitive) (dated) To make flat; to flatten; to level.
50. [verb] (transitive) (dated) To render dull, insipid, or spiritless; to depress.
51. [noun] (archaic) (New England) (now chiefly British and Australian) An apartment.
52. [noun] A level tract of land; 'the salt flats of Utah'.
53. [noun] A shallow box in which seedlings are started.
54. [noun] A musical notation indicating one half step lower than the note named.
55. [noun] Freight car without permanent sides or roof.
56. [noun] A deflated pneumatic tire.
57. [noun] Scenery consisting of a wooden frame covered with painted canvas; part of a stage setting.
58. [noun] A suite of rooms usually on one floor of an apartment house.
59. [adverb] With flat sails; 'sail flat against the wind'.
60. [adverb] In a forthright manner; candidly or frankly; 'he didn't answer directly'; 'told me straight out'; 'came out flat for less work and more pay'.
61. [adjective] Having a surface without slope, tilt in which no part is higher or lower than another; 'a flat desk'; 'acres of level farmland'; 'a plane surface'; 'skirts sewn with fine flat seams'.
62. [adjective] Having a relatively broad surface in relation to depth or thickness; 'flat computer monitors'.
63. [adjective] Not modified or restricted by reservations; 'a categorical denial'; 'a flat refusal'.
64. [adjective] Stretched out and lying at full length along the ground; 'found himself lying flat on the floor'.
65. [adjective] Lacking contrast or shading between tones.
66. [adjective] (of a musical note) lowered in pitch by one chromatic semitone; 'B flat'.
67. [adjective] Flattened laterally along the whole length (e.g., certain leafstalks or flatfishes).
68. [adjective] Lacking taste or flavor or tang; 'a bland diet'; 'insipid hospital food'; 'flavorless supermarket tomatoes'; 'vapid beer'; 'vapid tea'.
69. [adjective] Lacking stimulating characteristics; uninteresting; 'a bland little drama'; 'a flat joke'.
70. [adjective] Having lost effervescence; 'flat beer'; 'a flat cola'.
71. [adjective] Sounded or spoken in a tone unvarying in pitch; 'the owl's faint monotonous hooting'.
72. [adjective] Horizontally level; 'a flat roof'.
73. [adjective] Lacking the expected range or depth; not designed to give an illusion or depth; 'a film with two-dimensional characters'; 'a flat two-dimensional painting'.
74. [adjective] Not reflecting light; not glossy; 'flat wall paint'; 'a photograph with a matte finish'.
75. [adjective] Commercially inactive; 'flat sales for the month'; 'prices remained flat'; 'a flat market'.
