Wednesday, 17 May 2017
It means to get on a train. Why that should disappoint me I can't really say.
Entrain can also mean to drag along, or when applied to a fluid, to carry particles along in its flow. Eg The tea leaves were entrained from the pot into the cup.
Oh! I've just cheered myself up by remembering I took a photo (OK lots) of a steam train in Scotland. Three points if you can name it.