Wind breaker covering end of shore (5)
I believe the answer is:
weave
'wind' is the definition.
('weave' can be a synonym of 'wind')
'breaker covering end of shore' is the wordplay.
'breaker' becomes 'wave' (a wave 'breaks' on the shore).
'covering' means one lot of letters goes inside another.
'end of' says to take the final letters.
The final letter of 'shore' is 'e'.
'wave' going around 'e' is 'WEAVE'.
(Other definitions for weave that I've seen before include "Combine into a whole" , "Make tapestry - wind in and out" , "Form by interlacing strands of material" , "move from side to side" , "Make (fabrics)" .)