Main (5)
'main' is the definition.
(I know that main can be written as chief)
This is the entire clue.
(Other definitions for chief that I've seen before include "Person in charge, head" , "Leader; most important" , "arch" , "Tribal head" , "cardinal" .)
'main' is the definition.
(I know that main can be written as principal)
This is the entire clue.
(Other definitions for principal that I've seen before include "Star" , "Headmaster" , "Key" , "Source of income" , "First in order of importance" .)
'main' is the definition.
(the main is an old name for the sea)
This is the entire clue.
(Other definitions for sea that I've seen before include "All at . . . - totally confused" , "E.g. Yellow, Red area" , "7 [ship] s on this" , "The drink" , "Body of saltwater" .)