Great delight (5)
'great delight' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for glee that I've seen before include "Mirth - part-song" , "Merriment or gloating" , "Type of club" , "Lively or triumphant joy" , "Unrestrained joy" .)
(Other definitions for mirth that I've seen before include "Glee" , "Laughter" , "Jocularity" , "Hilarity" , "Merriment" .)