Wispy clouds

wisp

noun [C] UK   /wɪsp/ US  

wisp of cloud/smoke/steam› a small, thin line of cloud/smoke/steam:A blue wisp of cigarette smoke curled in the air.wisp of hair, grass, etc.› a thin, delicate piece of hair, grass, etc.:A few wisps of hay still clung to her skirt.soft wisps of baby hair