entrain
v.
1
"to draw along," 1560s, a term in chemistry, from French entrainer (12c.), from en- "away" (see en-(1)) + trainer "to drag" (see train, n.). Related: Entrained; entrainment.
2
"get on board a locomotive train," 1860s, from en-(1) "in, into" + train, n.. Related: Entrained.