To harmonize socially; to come to an amicable agreement; to ally or band together.
To achieve orgasm at the same time.
To meet.
To assemble; to congregate.
To arrive at a destination with someone after having travelled there with each other.
(said of two or more entities) To approach each other; to get closer and closer.
(said of a sequence or series) To have a (finite, proper) limit.
(said of an iterative process) To reach a stable end point.