From WordNet (r) 3.0 (2006):
discard
n 1: anything that is cast aside or discarded
2: (cards) the act of throwing out a useless card or of failing
to follow suit
3: getting rid something that is regarded as useless or
undesirable [syn: discard, throwing away]
v 1: throw or cast away; "Put away your worries" [syn:
discard, fling, toss, toss out, toss away, chuck
out, cast aside, dispose, throw out, cast out,
throw away, cast away, put away]