Last pair taken from shoe shop (5)

I believe the answer is:

sneak

I'm a little stuck... Click here to teach me more about this clue!

'shop' is the definition.
(sneak can mean to inform on someone or shop them)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for sneak that I've seen before include "Petty informer" , "Snitcher" , "peach" , "Steal" , "Go furtively - inform on another child" .)

I've seen this clue in The Guardian.

Want a hint initially instead of a full solution? Install my app