"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.
entrain (v.2)
"get on board a locomotive train," 1860s, from en- (1) "in, into" + train (n.). Related: Entrained.
entomology
entomophagous
entoparasite
entourage
entrails
entrain
entrammel
entrance
entrant
entrap
entrapment
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