1. [noun] (UK) (Australia) (Canada) (New England) (informal) Mother.
2. [noun] (dated) A term of respect for an older woman.
3. [noun] A chrysanthemum.
4. [adjective] (colloquial) silent.
5. [adjective] (colloquial) secret.
6. [interjection] Stop speaking! hush!
7. [verb] To act in a pantomime or dumb show
8. [noun] (obsolete) silence
9. [noun] A sort of strong beer, originally made in Brunswick, Germany.
10. [noun] Of China.
11. [noun] Informal terms for a mother.
12. [noun] Secrecy; 'mum's the word'.
13. [adjective] Failing to speak or communicate etc when expected to; 'the witness remained silent'.