Packed one hundred sheep at club? (7)
I believe the answer is:
crammed
'packed' is the definition.
('cram' can be a synonym of 'pack')
'one hundred sheep at club?' is the wordplay.
'one hundred' becomes 'c' (Roman numeral).
'sheep' becomes 'ram' (male sheep).
'at club?' becomes 'med' (I can't explain this - if you can you should give a lot more credence to this answer).
'c'+'ram'+'med'='CRAMMED'
Can you help me to learn more?
(Other definitions for crammed that I've seen before include "Stuffed" , "Packed in like a full suitcase" .)