From WordNet (r) 3.0 (2006):
join
n 1: the shape or manner in which things come together and a
connection is made [syn: articulation, join, joint,
juncture, junction]
2: a set containing all and only the members of two or more
given sets; "let C be the union of the sets A and B" [syn:
union, sum, join]
v 1: become part of; become a member of a group or organization;
"He joined the Communist Party as a young man" [syn:
join, fall in, get together]
2: cause to become joined or linked; "join these two parts so
that they fit together" [syn: join, bring together] [ant:
disjoin, disjoint]
3: come into the company of; "She joined him for a drink"
4: make contact or come together; "The two roads join here"
[syn: join, conjoin] [ant: disjoin, disjoint]
5: be or become joined or united or linked; "The two streets
connect to become a highway"; "Our paths joined"; "The
travelers linked up again at the airport" [syn: connect,
link, link up, join, unite]