Defn: A Silurian fossil, formerly supposed to consist of eggs.
NIDUS
Ni"dus, n.; pl. nidi. Etym: [L. See Nidi, Nest.]
Defn: A nest: a repository for the eggs of birds, insects, etc.; a breeding place; esp., the place or substance where parasites or the germs of a disease effect lodgment or are developed.
NIECE Niece, n. Etym: [OE. nece, F. nièce, LL. neptia, for L. neptis a granddaughter, niece, akin to nepos. See Nephew.]
1. A relative, in general; especially, a descendant, whether male or female; a granddaughter or a grandson. [Obs.] B. Jonson. Wyclif. Shak.
2. A daughter of one's brother or sister, or of one's brother-in-law or sister-in-law.
NIEF
Nief, n.
Defn: See Neif, the fist.
NIELLIST
Ni*el"list, n.
Defn: One who practices the style of ornamentation called niello.