Principal (4)
'principal' is the definition.
(both can mean major)
This is all the clue.
(Other definitions for main that I've seen before include "Salt water" , "river in Germany" , "associated with the Spanish?" , "Source of electricity" , "one might expect tap water from it" .)
'principal' is the definition.
(synonyms)
This is all the clue.
(Other definitions for star that I've seen before include "Top celebrity" , "Eg, Antares" , "Main attraction" , "Astronomer - dreamer" , "- - of Bethlehem" .)
'principal' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for lead that I've seen before include "Take a position in front" , "One with starring role" , "Actor playing the principal role" , "Call the shots" , "Be in charge of, element" .)
'principal' is the definition.
(as in arch-enemy)
This is the entire clue.
(Other definitions for arch that I've seen before include "Structural curve" , "Prefix meaning chief - maybe an angel" , "Clever" , "Roguish - chief - supporter" , "Annoyingly playful" .)
'principal' is the definition.
(synonyms)
This is all the clue.
(Other definitions for head that I've seen before include "Edible part of cabbage" , "Person in charge" , "See 14" , "Leader; stream source" , "River source; promontory" .)
'principal' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for major that I've seen before include "Important - ex-PM" , "Of great importance" , "Not minor" , "See 2" , "Big - PM" .)
'principal' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for prime that I've seen before include "Main; indivisible number" , "Chief or most important, like a minister" , "Chief or best quality" , "Prepare to fire - first" , "Brief" .)
'principal' is the definition.
(synonyms)
This is all the clue.
(Other definitions for chief that I've seen before include "Key" , "Person in charge, head" , "Leader, head" , "Head of a native American tribe" , "Organisation head" .)
'principal' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for staple that I've seen before include "Short U-shaped paper fastener" , "Pleats in a paper pin" , "Paper pin - basic" , "Important; paper fastener" , "Fastening wire" .)
'principal' is the definition.
(headmaster is a kind of principal)
This is all the clue.
(Other definitions for headmaster that I've seen before include "Principal" , "School manager" , "Top (male) teacher" .)
'principal' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for leading that I've seen before include "Prominent" , "Female top of the bill" , "Aligned in front" , "in van" , "In the vanguard" .)