Bill educator (4)
I believe the answer is:
head
I believe this clue is a double definition.
'bill' is the first definition.
(thesaurus)
'educator' is the second definition.
(I know that head is a type of educator)
(Other definitions for head that I've seen before include "bean" , "Be in charge of; (come to) crisis" , "See 25" , "River or stream source" , "Chief; promontory" .)