Main course (6)
'main course' is the definition.
(I know that main course can be written as entree)
This is all the clue.
(Other definitions for entree that I've seen before include "The right ot privilege of admission" , "Means of access - course" , "Privilege of admission, or food dish" , "Principal dish of a meal" , "Main course dish" .)
(Another definition for entre that I've seen is " - - nous (Fr.)".)