Join meaning : An intersection of piping or wiring; an interconnect. An intersection of data in two or more database tables. The act of joining something, such as a network. The lowest upper bound, an operation between pairs of elements in a lattice, denoted by the symbol ∨. To connect or combine into one; to put together. To come together; to meet. To come into the company of. To become a member of. To produce an intersection of data in two or more database tables. To unite in marriage. To enjoin upon; to command. To accept, or engage in, as a contest.