The noun join has 2 senses (no senses from tagged texts)
1. articulation, join, joint, juncture, junction -- (the shape or manner in which things come together and a connection is made)
2. union, sum, join -- (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")
Overview of verb join
The verb join has 5 senses (first 5 from tagged texts)
1. (76) join, fall in, get together -- (become part of; become a member of a group or organization; "He joined the Communist Party as a young man")
2. (18) join, bring together -- (cause to become joined or linked; "join these two parts so that they fit together")
3. (8) join -- (come into the company of; "She joined him for a drink")
4. (7) join, conjoin -- (make contact or come together; "The two roads join here")
5. (1) connect, link, link up, join, unite -- (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")