Sharpen the damaged point first (4)
I believe the answer is:
whet
'sharpen' is the definition.
(whetting is a kind of sharpening)
'the damaged point first' is the wordplay.
'damaged' is an anagram indicator.
'point' becomes 'w' (West).
'first' says to put letters next to each other.
'the' is an anagram of 'het'.
'het' put after 'w' is 'WHET'.
(Other definitions for whet that I've seen before include "'Sharpen, appetite say (4)'" , "Sharpen by grinding" , "Excite" , "Sharpen - stimulate" , "Sharpen the blade of (a tool/weapon)" .)