玉ぎょく瑛えいMeanings1nouncrystal; transparent gemLiterary or poetic term for a clear, sparkling gemstone or crystal. Not an everyday word; more common in classical or elevated writing.彼かの女じょの瞳ひとみは玉ぎょく瑛えいのように輝かがやいていた。Her eyes sparkled like crystals.