Tail trimmed to a point (4)
I believe the answer is:
scut
'tail' is the definition.
(scut is a kind of tail)
'trimmed to a point' is the wordplay.
'trimmed' becomes 'cut' ('cut' can be a synonym of 'trimmed').
'to a' says to put letters next to each other (I've seen this in other clues).
'point' becomes 's' (S is an example).
'cut' put after 's' is 'SCUT'.
(Other definitions for scut that I've seen before include "(Hare's) short upright tail" , "Short tail of hare" , "Cuts into a small tail" , "Small tail as of rabbit" , "Deer's tail" .)