Dance, then collapse, bewitched (9)
I believe the answer is:
enchanted
'bewitched' is the definition.
('enchanted' can be similar in meaning to 'bewitched')
'dance then collapse' is the wordplay.
'collapse' indicates an anagram.
'dance'+'then'='dancethen'
'dancethen' is an anagram of 'ENCHANTED'.
(Other definitions for enchanted that I've seen before include "delighted by spelling" , "Bewitched" , "Beguiled" , "Put under spell" , "Captivated" .)