猫眼儿 māoyǎnr peephole Definitions Defs Origin Strokes Stroke Words Sentences Sents māoyǎnr peephole 猫眼 貓眼 māoyǎn peephole a small hole or lens in a door used to see who is outside; also called a spyhole儿 兒 r particleaffix [erhua suffix] A suffix attached to a word to form a retroflex ending, often indicating a small size, a sense of familiarity, or turning a word into a noun.māoyǎnr cat's eye 猫眼 貓眼 māoyǎn cat's eye stone a precious gemstone with a shimmering luster that resembles a cat's eye, such as chrysoberyl儿 兒 r particleaffix [erhua suffix] A suffix attached to a word to form a retroflex ending, often indicating a small size, a sense of familiarity, or turning a word into a noun.