Traditional 第三眼瞼 dì sān yǎn jiǎn 🔊 nictitating membrane + Keep this word Meanings dì sān yǎn jiǎn 第三眼瞼 (zoology) nictitating membrane Its characters 第dì(makes an ordinal: 第一 first)HSK 1三sānthreeHSK 1眼yǎneye (CL:隻|只[zhi1],雙|双[shuang1])HSK 5睑jiǎneyelid