1. [verb] (transitive) To furnish with decorations.
2. [verb] (transitive) To improve the appearance of an interior of a house, room, office and so forth.
3. [verb] (computing) (transitive) (In some programming languages) To extend a method, etc. by attaching some further code item.
4. [verb] Make more attractive by adding ornament, colour, etc.; 'Decorate the room for the party'; 'beautify yourself for the special day'.
5. [verb] Be beautiful to look at; 'Flowers adorned the tables everywhere'.
6. [verb] Award a mark of honor, such as a medal, to; 'He was decorated for his services in the military'.
7. [verb] Provide with decoration; 'dress the windows'.