单眼 Traditional form: 單眼 Pinyin (reading): dānyǎn Definitions: ommatidium (single component of insect's compound eye) one eye (i.e. one's left or right eye) Characters: 单 - single, individual, only; lone 眼 - eyelet, hole, opening Traditional characters: 單 - single, individual, only; lone 眼 - eyelet, hole, opening