Line dance? (5)
I believe the answer is:
conga
This clue is a double definition.
'line' is the first definition.
(conga line is a kind of line)
'dance?' is the second definition.
(conga is a type of dance)
(Other definitions for conga that I've seen before include "Latin American dance with three steps and a kick" , "wiggling line" , "Latin-American dance" , "Party dance" , "Long-line dance" .)