Cheerful little person, given a bottle (6)
I believe the answer is:
jovial
'cheerful' is the definition.
(I've seen this in another clue)
'little person given a bottle' is the wordplay.
'little person given' becomes 'jo' (I can't justify this - if you can you should give a lot more credence to this answer).
'a bottle' becomes 'vial' (vial is a kind of bottle).
'jo'+'vial'='JOVIAL'
Can you help me to learn more?
(Other definitions for jovial that I've seen before include "Hearty and cheerful like Jupiter" , "Happy and cheerful" , "Good-humoured, cheerful" , "Jolly, good-humoured" , "Full of mirth" .)