Wild hopper in sailors' dance (8)
I believe the answer is:
hornpipe
'sailors' dance' is the definition.
(I've seen this before)
'wild hopper in' is the wordplay.
'wild' is an anagram indicator.
'hopper'+'in'='hopperin'
'hopperin' anagrammed gives 'HORNPIPE'.
(Other definitions for hornpipe that I've seen before include "Lively solo dance associated with sailors" , "Obsolete instrument: naval dance" , "Lively old sailors' dance" , "Lively jig" , "piece of music for an > old dance" .)