I will ride thee o' nights like the mare.

Shak.

Mare"chal Niel" (?). [F.] A kind of large yellow rose. [Written also

Marshal Niel.]

Mar"eis (?), n. A Marsh. [Obs.] Chaucer.

Ma*re"na (?), n. [NL. Salmo maraena, G. maräne, moräne; -- so called

from Lake Morin, in the March of Brandenburg, in Prussia.] (Zoöl.) A

European whitefish of the genus Coregonus.

Mare"schal (?), n. [OF. mareschal, F. maréchal. See Marshal.] A

military officer of high rank; a marshal. [Obs.]

Mare's"-nest` (?), n. A supposed discovery which turns out to be a

hoax; something grossly absurd.

Mare's"-tail` (?), n. 1. A long streaky cloud, spreading out like a

horse's tail, and believed to indicate rain; a cirrus cloud. See Cloud.

Mackerel sky and mare's-tails Make tall ships carry low sails.

Old Rhyme.

2. (Bot.) An aquatic plant of the genus Hippuris (H. vulgaris), having

narrow leaves in whorls.

Mar"ga*rate (?), n. [Cf. F. margarate.] (Physiol. Chem.) A compound of

the so- called margaric acid with a base.

Mar*gar"ic (?), a. [Cf. F. margarique. See Margarite.] Pertaining to,

or resembling, pearl; pearly.

Margaric acid. (a) (Physiol. Chem.) A fatty body, crystallizing in

pearly scales, and obtained by digesting saponified fats (soaps) with

an acid. It was formerly supposed to be an individual fatty acid, but

is now known to be simply an intimate mixture of stearic and palmitic

acids. (b) (Chem.) A white, crystalline substance, C17H34O2 of the

fatty acid series, intermediate between palmitic and stearic acids, and

obtained from the wax of certain lichens, from cetyl cyanide, and other

sources.

Mar"ga*rin (?), n. [Cf. F. margarine. See Margarite.] (Physiol. Chem.)

A fatty substance, extracted from animal fats and certain vegetable

oils, formerly supposed to be a definite compound of glycerin and

margaric acid, but now known to be simply a mixture or combination of

tristearin and tripalmitin.

Mar`ga*ri*ta"ceous (?), a. Pertaining to, or resembling, pearl; pearly.

Mar"ga*rite (?), n. [L. margarita, Gr. &?; a pearl; cf. F. marguerite.]

1. A pearl. [Obs.] Peacham.

2. (Min.) A mineral related to the micas, but low in silica and

yielding brittle folia with pearly luster.

Mar`ga*rit"ic (?), a. [Cf. F. margaritique.] (Physiol. Chem.) Margaric.

Mar`ga*ri*tif"er*ous (?), a. [L. margaritifer; margarita pearl + ferre

to bear: cf. F. margaritifère.] Producing pearls.

Mar*gar"o*dite (?), n. [Gr. &?; pearl- like.] (Min.) A hidrous potash

mica related to muscovite.

Mar"ga*rone (?), n. [Margaric + -one.] (Chem.) The ketone of margaric

acid.

Mar"ga*rous (?), a. (Chem.) Margaric; -- formerly designating a

supposed acid. [Obs.]

Mar"gate fish" (?). (Zoöl.) A sparoid fish (Diabasis aurolineatus) of

the Gulf of Mexico, esteemed as a food fish; -- called also red-mouth

grunt.

Mar"gay (?), n. (Zoöl.) An American wild cat (Felis tigrina), ranging

from Mexico to Brazil. It is spotted with black. Called also

long-tailed cat.

Marge (?), n. [F. marge. See Margin.] Border; margin; edge; verge.

[Poetic] Tennyson.

Along the river's stony marge.

Wordsworth.

Mar"gent (?), n. [OE. See Margin.] A margin; border; brink; edge.

[Obs.]

The beached margent of the sea.

Shak.

Mar"gent, v. t. To enter or note down upon the margin of a page; to

margin. [Obs.] Mir. for Mag.

Mar"gin (?), n. [OE. margine, margent, L. margo, ginis. Cf. March a

border, Marge.] 1. A border; edge; brink; verge; as, the margin of a

river or lake.

2. Specifically: The part of a page at the edge left uncovered in

writing or printing.

3. (Com.) The difference between the cost and the selling price of an

article.

4. Something allowed, or reserved, for that which can not be foreseen

or known with certainty.

5. (Brokerage) Collateral security deposited with a broker to secure

him from loss on contracts entered into by him on behalf of his

principial, as in the speculative buying and selling of stocks, wheat,

etc. N. Biddle.

Margin draft (Masonry), a smooth cut margin on the face of

hammer-dressed ashlar, adjacent to the joints. -- Margin of a course

(Arch.), that part of a course, as of slates or shingles, which is not

covered by the course immediately above it. See 2d Gauge.

Syn. -- Border; brink; verge; brim; rim.

Mar"gin (?), v. t. [imp. & p. p. Margined (?); p. pr. & vb. n.

Marginging.] 1. To furnish with a margin.

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