Potato chip brand (4)
I believe the answer is:
lays
'potato chip brand' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for lays that I've seen before include "Puts down; songs" , "Puts down the old ballads" , "Produces eggs" , "Places (bets?)" , "How Pertelote produces" .)