T-bone, for one (5)
I believe the answer is:
steak
't-bone for one' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for steak that I've seen before include "High quality beef" , "Porterhouse, perhaps?" , "Thick slice of meat" , "- - tartare" , "Portion of meat" .)