Look, in return, for food and lodging (4)
I believe the answer is:
peek
'look' is the definition.
(peek is a kind of look)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for peek that I've seen before include "spy" , "Glimpse" , "Take brief or surreptitious look" , "Furtive glance" , "Secret look" .)