function noun
1 purpose/special duty of sb/sth
ADJ. crucial, essential, important, useful, valuable, vital | chief, main, major, primary, prime | dual The committee has a dual function, both advisory and regulatory. | bodily, brain, liver, mental, etc. Fortunately, his head injuries left his bodily functions unimpaired.
VERB + FUNCTION have | carry out, fulfil, perform, serve All members carry out their own particular functions. The club serves a useful function as a meeting place.
2 important social event
ADJ. charity, official, social The princess attended a charity function in aid of cancer research.
VERB + FUNCTION hold | attend, go to
FUNCTION + NOUN room The wedding reception will be held in the Swan Hotel's function room.