n A collection of various objects for a particular purpose.
n An object made up several parts
n (set theory) A collection of zero or more objects, possibly infinite in size, and disregarding any order or repetition of the objects which may be contained within it.
n (UK|education) A class group in a subject where pupils are divided by ability.
n (poker|slang)three of a kind | Three of a kind in poker. In w:community card poker|community card games, the term is usually reserved for a situation in which a pair in a player's hand is matched by a single card on the board. Compare with trips. Weisenberg, Michael (2000) [http://www.poker1.com/mcu/pokerdictionary/mculib_dictionary_info.asp The Official Dictionary of Poker]. MGI/Mike Caro University. ISBN 978-1880069523