Grasp keys in small container (6,3)
I believe the answer is:
clutch bag
'container' is the definition.
(clutch bag is a kind of container)
'grasp keys in small' is the wordplay.
'grasp' becomes 'clutch' (synonyms).
'keys in small' becomes 'bag' (I am not sure about this - if you are sure you should believe this answer much more).
'clutch'+'bag'='CLUTCH BAG'
Can you help me to learn more?
(Other definitions for clutch bag that I've seen before include "Woman's strapless fashion accessory" , "where lady keeps her things" .)