[ mair ]
/ mɛər /


a fully mature female horse or other equine animal.

Origin of mare

before 900; Middle English, variant of mere, Old English m(i)ere; cognate with Dutch merrie, German Mähre, Old Norse merr; akin to Old English mearh, Old Norse marr, Irish marc horse. See marshal


mare mayor

Definition for mare (2 of 7)

[ mair ]
/ mɛər /

noun Obsolete.

Origin of mare

before 900; Middle English, Old English; cognate with German Mahre, Old Norse mara. See nightmare

Definition for mare (3 of 7)

[ mahr-ey, mair-ee ]
/ ˈmɑr eɪ, ˈmɛər i /

noun, plural ma·ri·a [mahr-ee-uh, mair-] /ˈmɑr i ə, ˈmɛər-/. Astronomy.

any of the several large, dark plains on the moon and Mars: Galileo believed that the lunar features were seas when he first saw them through a telescope.

Origin of mare

1680–90; < Latin: sea

Definition for mare (4 of 7)

[ si-ree-nuh m ]
/ sɪˈri nəm /


Mare. Mare Sirenum.

Definition for mare (5 of 7)


Marine Engineer.

Definition for mare (6 of 7)

mare nostrum
[ mah-re nohs-troo m; English mair-ee nos-truh m, mahr-ey ]
/ ˈmɑ rɛ ˈnoʊs trʊm; English ˈmɛər i ˈnɒs trəm, ˈmɑr eɪ /

noun Latin.

our sea, especially the Mediterranean to the ancient Romans.

Definition for mare (7 of 7)

de la Mare
[ duh luh mair, del-uh mair ]
/ də lə ˈmɛər, ˈdɛl ə ˌmɛər /


Walter (John),1873–1956, English poet, novelist, playwright, and short-story writer. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for mare

British Dictionary definitions for mare (1 of 4)

/ (mɛə) /


the adult female of a horse or zebra

Word Origin for mare

C12: from Old English, of Germanic origin; related to Old High German mariha, Old Norse merr mare

British Dictionary definitions for mare (2 of 4)

/ (ˈmɑːreɪ, -rɪ) /

noun plural maria (ˈmɑːrɪə)

(capital when part of a name) any of a large number of huge dry plains on the surface of the moon, visible as dark markings and once thought to be seas: Mare Imbrium (Sea of Showers)
a similar area on the surface of Mars, such as Mare Sirenum

Word Origin for mare

from Latin: sea

British Dictionary definitions for mare (3 of 4)

de la Mare
/ (də lɑː mɛə) /


Walter (John). 1873–1956, English poet and novelist, noted esp for his evocative verse for children. His works include the volumes of poetry The Listeners and Other Poems (1912) and Peacock Pie (1913) and the novel Memoirs of a Midget (1921)

British Dictionary definitions for mare (4 of 4)

mare nostrum
/ Latin (ˈmɑːreɪ ˈnɒstrʊm) /


the Latin name for the Mediterranean

Word Origin for mare nostrum

literally: our sea
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for mare

[ märā ]

Plural maria (rē-ə)

Any of the large, low-lying dark areas on the Moon or on Mars or other inner planets. The lunar maria are believed to consist of volcanic basalts, and many are believed to be basins formed initially by large impacts with meteoroids and later filled with lava flows. Compare terra.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.