ochre (US also ocher)

n [U] 1 (any of various types of) light yellow or red earth used for making colourings, eg in paints 赭石（用作颜料）. 2 light yellowish-brown colour 赭色; 暗棕色; 土黄色; 红褐色: He painted the walls ochre. 他把墙壁涂成赭色了.

occult, occultist, occupancy, occupant, occupation, occupational, occupied, occupier, occupy, occur, occur to, occurrence, ocean, ocean lane, ocean-going, oceanarium, Oceania, oceanic, oceanography, ocelot, Oct, oct(o)-, octagon, octagonal, octane, octane number (also `octane rating), octave, octavo, octet (also octette), October, octogenarian, octopus, ocular, oculist, odd, odd job man, odd jobs, odd-looking, oddball, oddity,