transitive verb

1. to join or fasten (two things together, or one thing with or to another); link; couple
2. to show or think of as related; associate to connect germs with disease
3. to provide with a circuit for communicating by telephone
4. to plug into an electrical circuit

Etymology: ME connecten < L connectere, to bind together < com-, together + nectere, to fasten

intransitive verb

1. to join or be joined
2. ☆ to meet so that passengers can transfer promptly: said of trains, buses, etc.
3. to be related in some way or in a proper or logical way
4. Informal
   1. to reach the thing aimed at
   2. to establish a rapport (with)
   3. Sports to hit a ball, target, etc. solidly
   4. Sports to be successful connected on eighty percent of his shots