Vocabulary What does 子牛 (こうし, koushi) mean? 子牛 (こうし, koushi) means calf. Quick factsReadingこうしRomajikoushiPart of speechnoun 子牛こうしkoushicalf1noun calf2noun small cowAlso written: 仔牛、小牛、犢Kanji in this word子child牛cow, ox, cattle