Embargo on most of domestic fowl (6)
I believe the answer is:
bantam
'fowl' is the definition.
(bantam is a kind of fowl)
'embargo on most of domestic' is the wordplay.
'embargo' becomes 'ban' (I've seen this before).
'on' is a charade indicator (letters next to each other).
'most of' means to remove the last letter.
'domestic' becomes 'tame' ('tame' can be similar in meaning to 'domestic').
'tame' with its final letter removed is 'tam'.
'ban'+'tam'='BANTAM'
(Other definitions for bantam that I've seen before include "Half of 1D [GAME OR BIRD]" , "A cock; one small, aggressive" , "weight of a pug" , "Small chicken - small soldier" , "Supplier of eggs" .)