It may invite a smashing return (3)

I believe the answer is:

lob

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

'return' is the definition.
(I know that lob is a type of return)

I cannot understand how the rest of the clue works.

(Other definitions for lob that I've seen before include "Pollack" , "High throw or hit" , "Toss" , "Tennis shot" , "High shot" .)

I've seen this clue in the Evening Standard.

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