cloud
1. cloud \'klau.d\ n [ME rock, cloud, fr. OE clu-d; akin to Gk gloutos buttock] often attrib 1a: a visible mass of particles of water or ice in the form of fog, mist, o r haze suspended usu. at a considerable height in the air 1b: a light filmy, puffy, or billowy mass seeming to float in the air 2: a usu. visible mass of minute particles suspended in the air or in a gas ; also : one of the masses of obscuring matter in interstellar space 3: a great crowd or multitude : SWARM 4: something that has a dark, lowering, or threatening aspect 5: something that obscures or blemishes 6: a dark or opaque vein or spot (as in marble) 2. cloud vi 1: to grow cloudy 2a: of facial features : to become troubled, apprehensive, or dist ressed in appearance 2b: to become blurry, dubious, or ominous 3: to billow up in the form of a cloud 1a: to envelop or hide with a cloud or as if by a cloud 1b: to make opaque esp. by condensation of moisture 1c: to make murky esp. with smoke or mist 2: to make unclear or indistinct 3: TAINT, SULLY 4: to cast gloom over
Webster's English Dictionary