Devour steak perhaps leaving starter (3)
I believe the answer is:
eat
'devour' is the definition.
(I've seen this in another clue)
'steak perhaps leaving starter' is the wordplay.
'steak perhaps' becomes 'meat' (steak is a type of meat).
'leaving starter' means to remove the first letter.
'meat' with its initial letter taken off is 'EAT'.
(Other definitions for eat that I've seen before include "Corrode" , "tolerate in diet" , "Scoff" , "Have 23d [MEAL]" , "to do etching?" .)