Cheered up after capturing large biblical character (7)
I believe the answer is:
delilah
'biblical character' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for delilah that I've seen before include "Temptress associated with Samson" , "She cut Samson's hair" , "Samson's destroyer" , "Samson's false girl-friend" , "Samsons mistress" .)