Laugh and return for the man-traps (7)
I believe the answer is:
snigger
'laugh' is the definition.
(snigger is a kind of laugh)
'and return for the man-traps' is the wordplay.
I cannot quite understand how this works, but
'and' could be 'n' (common abbreviation for 'and') and 'n' is located in the answer.
'man' could be 'sig' and 'sig' is present in the leftover letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for snigger that I've seen before include "Dirty laugh" , "Half-suppressed laugh" , "Laugh in a scornful way" , "Laugh disrespectfully" , "Gingers up to laugh in sly way" .)