机甲 Traditional form: 機甲 Pinyin (reading): jījiǎ Definitions: mecha (human-operated robots in Japanese manga) Characters: 机 - desk; machine; moment, opportunity 甲 - armor, shell; fingernails; 1st heavenly stem Traditional characters: 機 - desk; machine; moment, opportunity 甲 - armor, shell; fingernails; 1st heavenly stem