Definition of in train
: in an active state or condition a process that had been in train for decades A decision has been made and the plans have been set in train.
Word by Word Definitions
: a connected line of railroad cars with or without a locomotive
: an automotive tractor with one or more trailer units
: retinue, suite
: to teach so as to make fit, qualified, or proficient
: to form by instruction, discipline, or drill
: to make prepared (as by exercise) for a test of skill
: scheme, trick
Seen and Heard
What made you want to look up in train? Please tell us where you read or heard it (including the quote, if possible).