Loaf or tile, possibly (6)
I believe the answer is:
'loaf' is the definition.
'or tile possibly' is the wordplay.
'possibly' indicates anagramming the letters.
'ortile' is an anagram of 'LOITER'.
(Other definitions for loiter that I've seen before include "lounge", "Skulk", "Hang about idly", "Hang around furtively", "be on stand-by?".)