1. (n.) A tendril or clasper.

2. (n.) 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. (n.) The jointed, leglike organs of Cirripedia. See Polychaeta.

4. (n.) The external male organ of trematodes and some other worms, and of certain Mollusca.

5. (n.) See under Cloud.

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