%eide%

n. [ Di- + ureide. ] (Chem.) One of a series of complex nitrogenous substances regarded as containing two molecules of urea or their radicals, as uric acid or allantoin. Cf. Ureide. [ 1913 Webster ]

n. 1. a toy shaped somewhat like a top, but having four flat sides, each marked with one of the Hebrew letters nun, gimel, he, or shin. It is spun like a top, and the letter showing when it stops spinning determines the outcome of a game of chance. [ PJC ]

2. a game of chance played with a dreidel{ 1 }, most commonly by children at Hannukah. [ PJC ]

n. [ Of Scand. origin, cf. Icel æ&unr_;r; akin to Sw. eider, Dan. ederfugl. ] (Zoöl.) Any species of sea duck of the genus Somateria, esp. Somateria mollissima, which breeds in the northern parts of Europe and America, and lines its nest with fine down (taken from its own body) which is an article of commerce; -- called also eider duck. The American eider (S. Dresseri), the king eider (S. spectabilis), and the spectacled eider (Arctonetta Fischeri) are related species. [ 1913 Webster ]

Eider down. [ Cf. Icel. æðardūn, Sw. eiderdūn, Dan. ederduun. ] Down of the eider duck, much sought after as an article of luxury. [ 1913 Webster ]

n. [ F. ophicléide, fr. Gr. 'o`fis a serpent + &unr_;, gen. &unr_;, a key. So named because it was in effect the serpent, an old musical instrument, with keys added. ] (Mus.) A large brass wind instrument, formerly used in the orchestra and in military bands, having a loud tone, deep pitch, and a compass of three octaves; -- now generally supplanted by bass and contrabass tubas. It developed from the older wooden instrument called the serpent. Moore (Encyc. of Music). [ 1913 Webster +PJC ]

n. See Oroide. [ 1913 Webster ]

‖n. pl. [ NL., fr. Phryganea, the typical genus, fr. Gr. &unr_; a dry stick. ] (Zool.) A tribe of neuropterous insects which includes the caddice flies; -- called also Trichoptera. See Trichoptera. [ Written also Phryganides. ] [ 1913 Webster ]

‖n. pl. [ NL. See Proteus, and -oid. ] (Zool.) An order of aquatic amphibians having prominent external gills and four legs. It includes Proteus and Menobranchus (Necturus). Called also Proteoidea, and Proteida. [ 1913 Webster ]

a. (Anat.) Discovered or described by C. V. Schneider, a German anatomist of the seventeenth century. [ 1913 Webster ]

Schneiderian membrane, the mucous membrane which lines the nasal chambers; the pituitary membrane. [ 1913 Webster ]