Sup (3)
'sup' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for eat that I've seen before include "Corrode" , "put away" , "Be corrosive" , "to do etching?" , "Dine in a restaurant" .)
(Other definitions for hey that I've seen before include "Exclamation calling attention" , "Exclamation to call attention" , "Call attracting attention" .)