[ mairz-teyl ]
/ ˈmɛərzˌteɪl /
a long narrow cirrus cloud whose flowing appearance somewhat resembles a horse's tail.
an erect, aquatic, Old World plant, Hippuris vulgaris, having crowded whorls of narrow, hairlike leaves.
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Question 1 of 10
Origin of mare's-tail
First recorded in 1755–65
Words nearby mare's-tail
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
British Dictionary definitions for mare's-tail
a wisp of trailing cirrus cloud, often indicating high winds in the upper troposphere
an erect cosmopolitan pond plant, Hippuris vulgaris, with minute flowers and crowded whorls of narrow leaves: family Hippuridaceae
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