Etymology
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cirrus (n.)

1708, "curl-like fringe or tuft," from Latin cirrus "a lock of hair, tendril, curl, ringlet of hair; the fringe of a garment." In meteorology, in reference to light, fleecy clouds, attested from 1803; so called from fancied resemblance of shape.

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Definitions of cirrus

cirrus (n.)
usually coiled;
Synonyms: cirrhus
cirrus (n.)
a wispy white cloud (usually of fine ice crystals) at a high altitude (4 to 8 miles);
Synonyms: cirrus cloud
cirrus (n.)
a slender flexible animal appendage as on barnacles or crinoids or many insects; often tactile;
From wordnet.princeton.edu