Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† glaucĭon, ii, n., = γλαύκιον, the (bluish) plant celandine: Chelidonium glaucium, Linn.; Plin. 27, 10, 59, § 83.
In plur., Mart. 9, 27, 2.