mare's-tail (redirected from mares'-tails)

mare's-tail (mârztl)

n. pl. mare's-tails or mares'-tails (mârztlz)

1. A cosmopolitan aquatic herb (Hippuris vulgaris) having minute flowers and linear whorled leaves.

2. A long narrow cirrus cloud with a flowing appearance.

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mare's-tail

n

1. (Earth Sciences / Physical Geography) a wisp of trailing cirrus cloud, often indicating high winds in the upper troposphere

2. (Life Sciences & Allied Applications / Plants) an erect cosmopolitan pond plant, Hippuris vulgaris, with minute flowers and crowded whorls of narrow leaves: family Hippuridaceae