Bearing to entrance, say (4)
I believe the answer is:
gait
'bearing' is the definition.
(I've seen this before)
'entrance say' is the wordplay.
'entrance' becomes 'gate' (I've seen this before).
'say' indicates a 'sounds like' (homophone) clue.
'gate' is a homophone of 'GAIT'.
'to' is the link.
(Other definitions for gait that I've seen before include "Style of walking" , "Way of walking sounds like way of entry" , "Walk" , "Style of movement" , "Deportment" .)