Pack up short man's tent (7)
I believe the answer is:
marquee
'tent' is the definition.
(I know that marquee is a type of tent)
'pack up short man's' is the wordplay.
I cannot really understand how this works, but
'man' could be 'mar' and 'mar' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for marquee that I've seen before include "Large and often sumptuous tent" , "Big tent" , "Elaborate tent" , "event venue" , "Large tent used for party, exhibition etc" .)