呉ご牛ぎゅうMeanings1nounwater buffalorare termRare term for water buffalo; the common word is 水牛 (すいぎゅう).See also: 水牛呉ご牛ぎゅうという言こと葉ばは、水すい牛ぎゅうの古ふるい呼よび方かたの一ひとつです。The word 呉牛 is an old term for water buffalo.