also: おそうじ
noun
slow cow; slow ox
A rare or archaic term for a slow-moving cow or ox. May appear in classical or poetic contexts, or as a metaphorical expression for slowness. Not used in modern everyday speech.
古い文献に「遅牛」という言葉が見られる。
The word 遅牛 can be found in old documents.
彼の歩みはまるで遅牛のようだ。
His pace is like that of a slow ox.
Compound of 遅 (oso, 'slow') and 牛 (ushi, 'cow/ox'). The exact historical derivation is uncertain; it is a straightforward descriptive compound.