Work a lot with new claw (5)
I believe the answer is:
talon
'claw' is the definition.
(I know that claw can be written as talon)
'work a lot with new' is the wordplay.
'work' indicates an anagram.
'with' means one lot of letters go next to another.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'a'+'lot'='alot'
'alot' anagrammed gives 'talo'.
'talo'+'n'='TALON'
(Other definitions for talon that I've seen before include "Tonal (anag.)" , "One hooked on bird" , "Claw; undealt cards" , "one that grips" , "a gripping one" .)