Definitions
1.nounA group of separate things that contribute to a coordinated whole.
2.nounA coordinated costume or outfit; a suit.
3.noun(collective) A group of musicians, dancers, actors, etc who perform together; e.g. the chorus of a ballet company.
4.nounA piece for several instrumentalists or vocalists.
5.nounA probability distribution for the state of the system.
6.noun(machine learning) A supervised learning algorithm combining multiple hypotheses.