merge in

merge in

To join, unite, or blend in (with something else). Be sure to give another car plenty of space to join the highway when it merges in from a side road. There's a stream that merges in about 100 kilometers from here—that's where we can nab the bandits.
See also: merge

merge in (to something)

to join into something. The stream merged into the main channel of the river.
See also: merge