Crossword Genius

Force prisoners on transport (9)

Ross

I believe the answer is:

constrain

'force' is the definition.
(thesaurus)

'prisoners on transport' is the wordplay.
'prisoners' becomes 'cons'.
'on' is a charade indicator (letters next to each other).
'transport' becomes 'train' (train is a kind of transport**).
'cons'+'train'='CONSTRAIN'

(Other definitions for constrain that I've seen before include "Compel; constrict" , "Restrict the extent of" , "Lock up" , "Check" , "Compel towards a course of action" .)

I've seen this clue in The Guardian.
Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.