Butcher hit rope holding lamb's head, where chopper comes down (8)
I believe the answer is:
heliport
'where chopper comes down' is the definition.
'butcher hit rope holding lamb's head' is the wordplay.
'butcher' indicates anagramming the letters.
'holding' is an insertion indicator.
'head' suggests taking the first letters.
The first letter of 'lambs' is 'l'.
'hit'+'rope'='hitrope'
'hitrope' anagrammed gives 'heiport'.
'heiport' enclosing 'l' is 'HELIPORT'.
(Other definitions for heliport that I've seen before include "where choppers may rest" , "Site for vertical take-off" , "Transport station" , "landing area" , "landing platform" .)