Under pressure, pull in front of ship (4)
I believe the answer is:
prow
'front of ship' is the definition.
(I've seen this before)
'under pressure pull' is the wordplay.
'under' says to put letters next to each other (in a down clue, some letters go below others).
'pressure' becomes 'p' (abbreviation).
'pull' becomes 'row' (I can't justify this - if you can you should believe this answer much more).
'p'+'row' is 'PROW'.
'in' is the link.
Can you help me to learn more?
(Other definitions for prow that I've seen before include "Pointed front part of a ship" , "bows" , "Boat's bow" , "Pointed front part of a vessel" , "position of figurehead" .)