Quick Quiz: Nouns Score: Change category, Flip order Reset Incorrect! Try again. Noun: blacktail deer Your choice? small dark-colored whaled of United States Atlantic coast; the largest male acts as pilot or leader for the school a distensible membranous sac (usually containing liquid or gas)   (Noun: bladder) the flat part of a tool or weapon that (usually) has a cutting edge   (Noun: blade) mule deer of western Rocky Mountains