Another name for a sail (5)
I believe the answer is:
alias
'another name' is the definition.
(I've seen this in another clue)
'a sail' is the wordplay.
'a sail' anagrams to 'ALIAS'.
But, I'm not clear how the anagram is indicated.
'for' is the link.
Can you help me to learn more?
(Other definitions for alias that I've seen before include "Otherwise known as" , "False or assumed name" , "A sail (anag)" , "aka" , "Otherwise called" .)