From WordNet (r) 3.0 (2006):
enter
v 1: to come or go into; "the boat entered an area of shallow
marshes" [syn: enter, come in, get into, get in,
go into, go in, move into] [ant: exit, get out,
go out, leave]
2: become a participant; be involved in; "enter a race"; "enter
an agreement"; "enter a drug treatment program"; "enter
negotiations" [syn: enter, participate] [ant: chuck up
the sponge, drop by the wayside, drop out, fall by the
wayside, give up, quit, throw in, throw in the
towel]
3: register formally as a participant or member; "The party
recruited many new members" [syn: enroll, inscribe,
enter, enrol, recruit]
4: be or play a part of or in; "Elections figure prominently in
every government program"; "How do the elections figure in
the current pattern of internal politics?" [syn: figure,
enter]
5: make a record of; set down in permanent form [syn: record,
enter, put down]
6: come on stage
7: take on duties or office; "accede to the throne" [syn:
accede, enter]
8: put or introduce into something; "insert a picture into the
text" [syn: insert, infix, enter, introduce]
9: set out on (an enterprise or subject of study); "she embarked
upon a new career" [syn: embark, enter]