Pork or beef (4)
I believe the answer is:
meat
'pork or beef' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for meat that I've seen before include "Spam, ham, lamb etc" , "Flesh for eating" , "Chops, steaks etc" , "grub, say" , "The flesh of animals as food" .)