Grand entrance to the top drawer (6)
I believe the answer is:
gentry
'the top drawer' is the definition.
(I've seen this before)
'grand entrance' is the wordplay.
'grand' becomes 'g' (G is short for grand as in a thousand).
'entrance' becomes 'entry' (synonyms).
'g'+'entry'='GENTRY'
'to' acts as a link.
(Other definitions for gentry that I've seen before include "The landowning classes" , "People of social rank just below nobility" , "People of high birth" , "Folk, often upper class" , "cream?" .)