Cirrus

n.	1.	(Bot.) A tendril or clasper.
	2.	(Zool.) A soft tactile appendage of the mantle of many Mollusca, and of the parapodia of Annelida. Those near the head of annelids are Tentacular cirri; those of the last segment are caudal cirri.
	3.	(Zool.) The external male organ of trematodes and some other worms, and of certain Mollusca.
	4.	(Meteor.) See under Cloud.

Noun	1.	cirrus - usually coiled Synonyms: cirrhus
	2.	cirrus - a wispy white cloud (usually of fine ice crystals) at a high altitude (4 to 8 miles) Synonyms: cirrus cloud
	3.	cirrus - a slender flexible animal appendage as on barnacles or crinoids or many insects; often tactile

Cloudcuckooland, alto-cumulus, alto-stratus, animal fiber, anvil cloud, artificial fiber, banner cloud, billowy cloud, cap cloud, capillament, cilium, cirro-cumulus, cirro-fillum, cirro-nebula, cirro-stratus, cirro-velum, cirrus cloud, cirrus haze, cirrus stripe, cloud, cloud band, cloud bank, cloud drift, cloud mass, cloud street, cloudland, cloudling, cloudscape, cobweb, cocktail, coil, corkscrew, cottony cloud, cumulo-cirro-stratus, cumulo-cirrus, cumulo-nimbus, cumulo-stratus, cumulus, cumulus cloud, curl, curl cloud, curlicue, denier, evolute, fiber, fibrilla, filament, filamentule, flagellum, fleecy cloud, fractocumulus, gossamer, gyre, hair, hank, helix, high fog, involute, kink, mackerel sky, mammatocumulus, mushroom cloud, nimbus, nimbus cloud, rain cloud, ringlet, roll, screw, scroll, scud, skein, snail cloud, spiral, squall cloud, storm cloud, strand, strato-cumulus, stratus, stratus cloud, suture, swirl, tendril, thread, threadlet, thundercloud, thunderhead, twirl, twist, volute, volution, vortex, water carrier, web, whirl, whorl, woolpack