Lox's partner (5)
I believe the answer is:
bagel
'lox's partner' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for bagel that I've seen before include "Ring-shaped bread roll" , "Toroidal bread roll" , "round fare" , "Doughnut-shaped bread roll" , "It's edible" .)