Implement used in odd daze (4)
I believe the answer is:
adze
'implement' is the definition.
(adze is a kind of implement)
'odd daze' is the wordplay.
'odd' is an anagram indicator.
'daze' anagrammed gives 'ADZE'.
'used in' acts as a link.
(Other definitions for adze that I've seen before include "tool for carpenter" , "Carpenter's tool sounds mathematical" , "cutter" , "One used to cut" , "Sounds as if one appends the tool for shaping wood." .)