Another name for a sail that's put around (5)
I believe the answer is:
alias
'another name' is the definition.
(I've seen this before)
'a sail that's put around' is the wordplay.
'that's put around' says the letters should be written in reverse.
'sail' back-to-front is 'lias'.
'a'+'lias'='ALIAS'
'for' acts as a link.
(Other definitions for alias that I've seen before include "one's assumed" , "it may be assumed" , "Alternative name" , "Pseudonym" , "aka" .)