join

verb

1. (transitive)To connect or combine into one; to put together.

   “The plumber joined the two ends of the broken pipe.”

   “We joined our efforts to get an even better result.”

2. (intransitive)To come together; to meet.

   “Parallel lines never join.”

   “These two rivers join in about 80 miles.”

3. (intransitive)To enter into association or alliance, to unite in a common purpose.

   “Forſake thy king and do but ioyne with me And we will triumph ouer al the world.”

   “[…]Nature and Fortune ioyn’d to make thee great.”

4. (transitive)To come into the company of.

   “I will join you watching the football game as soon as I have finished my work.”

   “No matter how early I came down, I would find him on the veranda, smoking cigarettes, or otherwise his man would be there with a message to say that his master would shortly join me if I would kindly wait.”

5. (transitive)To become a member of.

   “Many children join a sports club.”

   “Most politicians have joined a party.”

   “In the autumn there was a row at some cement works about the unskilled labour men. A union had just been started for them and all but a few joined. One of these blacklegs was laid for by a picket and knocked out of time.”

6. (transitive)To produce an intersection of data in two or more database tables.

   “By joining the Customer table on the Product table, we can show each customer's name alongside the products they have ordered.”

7. To unite in marriage.

   “Into the whiche holy eſtate theſe two perſones pꝛeſent: come nowe to be ioyned.”

   “[…]this fellow wil but ioyne you together, as they ioyne Wainscot, then one of you wil proue a ſhrunke pannell[…]”

   “What therefore God hath ioyned together, let not man put aſunder.”

8. (obsolete, rare)To enjoin upon; to command.

   “And they ioyne them penaunce / as they call it / to faſt / to goo pylgremages ⁊ geve ſo moch to make ſatiſfaccion with all.”

9. To accept, or engage in, as a contest.

   “to join encounter, battle, or issue”

   “Then when our powers in points of ſwords are ioin’d And cloſde in compaſſe of the killing bullet, […]”

   “On the rough edge of battel ere it joyn'd.”

   “Before joining battle, the officers and warriors gathered to make divinations "before the spirits of the former rulers," as at the battle of Yen-ling between Chin and Ch'u in 575 b.c.”

noun

1. An act of joining or the state of being joined; a junction or joining.

   “We found 217 putative interchromosomal joins. Only one of these joins (in the paternal assembly of HG02080) was located in a euchromatic, non-acrocentric region and was manually confirmed to be a misassembly.”

2. An intersection of piping or wiring; an interconnect.
3. An intersection of data in two or more database tables.
4. The act of joining something, such as a network.

   “The offline domain join is a three-step process described subsequently: […]”

5. The lowest upper bound, an operation between pairs of elements in a lattice, denoted by the symbol ∨.