Join  —v. 1 (often foll. By to, together) put together; fasten, unite (with one or several things or people). 2 connect (points) by a line etc. 3 become a member of (a club, organization, etc.). 4 a take one's place with (a person, group, etc.). B (foll. By in, for, etc.) Take part with (others) in an activity etc. (joined them in prayer). 5 (often foll. By with, to) come together; be united. 6 (of a river etc.) Be or become connected or continuous with. —n. Point, line, or surface at which things are joined.  join battle begin fighting. Join forces combine efforts. Join hands 1 clasp hands. 2 combine in an action etc. Join in (also absol.) Take part in (an activity). Join up 1 enlist for military service. 2 (often foll. By with) unite, connect. [latin jungo junct-]