Like some of the house claret? (3)
I believe the answer is:
'like' is the definition.
Both the answer and definition are adjectives. Perhaps you can see a link between them that I can't see?
'some of the house claret?' is the wordplay.
'some of' indicates the answer is hidden within the clue.
'SEC' can be found hidden inside 'the house claret'.
Can you help me to learn more?
(Other definitions for sec that I've seen before include "21 down, as wine", "Dry, like wine", "sort of function", "period not lasting long", "Dry wine perhaps".)