Sailor's dance (8)
I believe the answer is:
hornpipe
'sailors' dance' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for hornpipe that I've seen before include "piece of music for an > old dance" , "Obsolete instrument: naval dance" , "Lively jig" , "Lively old sailors' dance" , "Lively solo dance associated with sailors" .)