Possibly tame lamb? (4)
I believe the answer is:
meat
'lamb?' is the definition.
(lamb is a kind of meat)
'possibly tame' is the wordplay.
'possibly' indicates anagramming the letters.
'tame' is an anagram of 'MEAT'.
(Other definitions for meat that I've seen before include "Ham, pork, chicken etc" , "Edible flesh" , "Eg, beef or pork" , "Spam, ham, lamb etc" , "17 [ESSENCE]" .)