Tramp's sea trip abandoned (7)
I believe the answer is:
traipse
'tramp's' is the definition.
(thesaurus)
'sea trip abandoned' is the wordplay.
'abandoned' is an anagram indicator.
'sea'+'trip'='seatrip'
'seatrip' is an anagram of 'TRAIPSE'.
(Other definitions for traipse that I've seen before include "Parties (anag.)" , "Pirates (anag) -- walk without 9" , "travel wearily" , "make slow progress" , "Walk heavily" .)