Look - here's what we do with the Joneses (4)
I believe the answer is:
peek
'look' is the definition.
(peek can mean to look at quickly)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for peek that I've seen before include "Quick, sly look" , "Secret look" , "spy" , "Glimpse" , "Furtive glance" .)