Very keen to weave braid (5)
I believe the answer is:
rabid
'very keen' is the definition.
'weave braid' is the wordplay.
'weave' indicates anagramming the letters.
'braid' is an anagram of 'RABID'.
'to' acts as a link.
(Other definitions for rabid that I've seen before include "Frenzied" , "Extremely fanatical" , "extremist" , "Wild" , "Ill from a mad dog bite?" .)