オコジョおこじょFreq.FrequencyTop 100,000Meanings1nounstoat; ermine; short-tailed weaselRefers to the animal Mustela erminea, known for its white winter coat (ermine). In Japanese, オコジョ is the common name.北ほっ海かい道どうでオコジョを見みた。I saw a stoat in Hokkaido.オコジョは冬ふゆになると白しろい毛けに変かわる。The stoat turns white in winter.