Grand pike found in butcher's? (6)
I believe the answer is:
glance
'butcher's?' is the definition.
(butcher's hook is Cockney rhyming slang for look)
'grand pike' is the wordplay.
'grand' becomes 'g' (G is short for grand as in a thousand).
'pike' becomes 'lance' (both can mean a sharp stick).
'g'+'lance'='GLANCE'
'found in' acts as a link.
(Other definitions for glance that I've seen before include "Take a brief or hurried look" , "it has a metallic lustre" , "Swift look" , "Batting stroke" , "Butcher's" .)