切り株: tree stump, branch snag

猫被り: being a wolf in sheep's clothing, feigning ignorance or innocence, someone who feigns ignorance or innocence

猫を被る: feign innocence

兜合わせ: frot

(Classical Japanese, archaic) to become rustic, to become countrified

to pretend to know

(vehicles) Synonym of オープンカー (ōpun kā, “convertible”); a cabriolet

(archaic) to tilt one's head / (archaic) to dress or act in a strange or eccentric way to attract one's attention / (archaic) to perform kabuki

(stock market) old stock

(mathematics) improper fraction (arithmetic: a vulgar fraction)