トゲアシガニ LinksSentence search for トゲアシガニSentence search for 棘脚蟹Sentence search for とげあしがにEdit in JMdict Noun1. flat rock crab (Percnon planissimum)Usually written using kana aloneOther forms棘脚蟹 【とげあしがに】Notes棘脚蟹: Rarely-used kanji form. Discussions Log in to talk about this word.