Pistol
'pistol' is the definition.
(I know that revolver is a type of pistol)
This is the entire clue.
(Other definitions for revolver that I've seen before include "Type of gun" , "Six-shooter" , "Hand gun" , "1966 platter" , "firearm" .)
'pistol' is the definition.
(thesaurus)
This is all the clue.
(Other definitions for firearm that I've seen before include "dangerous weapon" , "One's fired" , "Lethal Weapon" , "Colt perhaps" , "piece" .)