Chapter N to Name of N by Webster's Dictionary (1913 Edition)

1. That point of the heavens, or lower hemisphere, directly opposite the zenith; the inferior pole of the horizon; the point of the celestial sphere directly under the place where we stand.

2. The lowest point; the time of greatest depression.

The seventh century is the nadir of the human mind in Europe.

Hallam.

Nadir of the sun (Astron.), the axis of the conical shadow projected by the earth. Crabb.

Nænia
(||Næ"ni*a) n. See Nenia.

Næve
(Næve) n. [L. naevus.] A nævus. [Obs.] Dryden.

Nævoid
(Næ"void) a. [Nævus + -oid.] Resembling a nævus or nævi; as, nævoid elephantiasis. Dunglison.

Nævose
(Næ"vose`) a. Spotted; freckled.

Nævus
(||Næ"vus) n.; pl. Nævi (- vi). [L.] (Med.) A spot or mark on the skin of children when born; a birthmark; — usually applied to vascular tumors, i. e., those consisting mainly of blood vessels, as dilated arteries, veins, or capillaries.

Nag
(Nag) n. [OE. nagge, D. negge; akin to E. neigh.]

1. A small horse; a pony; hence, any horse.

2. A paramour; — in contempt. [Obs.] Shak.

Nag
(Nag), v. t. & i. [imp. & p. p. Nagged ; p. pr. & vb. n. Nagging ] [Cf. Sw. nagga to nibble, peck, Dan. nage to gnaw, Icel. naga, gnaga, G. nagen, & E. gnaw.] To tease in a petty way; to scold habitually; to annoy; to fret pertinaciously. [Colloq.] "She never nagged." J. Ingelow.

Nagging
(Nag"ging) a. Fault-finding; teasing; persistently annoying; as, a nagging toothache. [Colloq.]

Naggy
(Nag"gy) a. Irritable; touchy. [Colloq.]

Nagor
(||Na"gor) n. (Zoöl.) A West African gazelle

Nagyagite
(Nag"yag*ite) n. [So called from Nagyag, in Transylvania.] (Min.) A mineral of blackish lead-gray color and metallic luster, generally of a foliated massive structure; foliated tellurium. It is a telluride of lead and gold.

Naiad
(Na"iad) n. [L. naias, - adis, naïs, -idis, a water nymph, Gr fr. to flow: cf. F. naïade. Cf. Naid.]

1. (Myth.) A water nymph; one of the lower female divinities, fabled to preside over some body of fresh water, as a lake, river, brook, or fountain.

2. (Zoöl.) Any species of a tribe (Naiades) of freshwater bivalves, including Unio, Anodonta, and numerous allied genera; a river mussel.

3. (Zoöl) One of a group of butterflies. See Nymph.

4. (Bot.) Any plant of the order Naiadaceæ, such as eelgrass, pondweed, etc.

Naiant
(Na"iant) a. (Her.) See Natant. Crabb.

Naid
(Na"id) n. [See Naiad.] (Zoöl.) Any one of numerous species of small, fresh- water, chætopod annelids of the tribe Naidina. They belong to the Oligochæta.