Trim ends oddly knotted (4)
I believe the answer is:
tied
'knotted' is the definition.
('tied' can be similar in meaning to 'knotted')
'trim ends oddly' is the wordplay.
'oddly' means one should take alternating letters.
'trim'+'ends'='trimends'
The alternating letters of 'trimends' are 'TIED'.
(Other definitions for tied that I've seen before include "have equal scores" , "(Of pub) controlled by a brewery" , "United" , "With an equal score" , "(Of pub) brewery-owned" .)