v. i. To go aboard a railway train; as, the troops entrained at the station. [ Recent, Eng. ] [ 1913 Webster ]
v. t. [ F. entrainer. ] To draw along as a current does; as, water entrained by steam. [ 1913 Webster ]
v. t. [ Pref. en- + train. ] To put aboard a railway train; as, to entrain a regiment. [ Recent, Eng. ] [ 1913 Webster ]