キーケースMeanings1nounkey case; key pouchA small case or pouch for holding keys, often with hooks or compartments.新あたらしいキーケースを買かった。I bought a new key case.このキーケースは革かわ製せいで、鍵かぎを6本ろっぽん収しゅう納のうできます。This key case is made of leather and can hold six keys.