Peculiar spirit (3)
I believe the answer is:
rum
This clue is a double definition.
'peculiar' is the first definition.
(I know that peculiar can be written as rum)
'spirit' is the second definition.
(alcoholic spirit)
(Other definitions for rum that I've seen before include "Eerie" , "An alcoholic spirit - sounds odd" , "Peculiar like sailor's drink (3)" , "Odd kind of drink for sailor" , "Unusual" .)