Beds on ships or trains (6)
I believe the answer is:
berths
'beds on ships or trains' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for berths that I've seen before include "Beds in cabins" , "Train or ship bunks" , "Beds on boats" , "where sailors sleep" , "Bunks; moorings" .)