I. in-ˈtrān transitive verb
Etymology: Middle French entrainer, from en- + trainer to draw, drag — more at train
Date: 1568
1. : to draw along with or after oneself
2. : to draw in and transport (as solid particles or gas) by the flow of a fluid
3. : to incorporate (air bubbles) into concrete
4. : to determine or modify the phase or period of
circadian rhythms entrain ed by a light cycle
• en·train·er noun
• en·train·ment -ˈtrān-mənt noun
II. verb
Date: 1881
transitive verb
: to put aboard a train
intransitive verb
: to go aboard a train