From Longman Dictionary of Contemporary Englishcirruscir‧rus /ˈsɪrəs/ noun [uncountable] HEMa form of cloud that is light and shaped like feathers, high in the sky
Examples from the Corpus
cirrus• Scientists say the average cirrus cloud cover over the United States has increased 5 percent since the 1960s.• The sky is clear blue, with a few cirrus clouds adding texture to what looks like a flawless blue canvas.CirrusCirrus trademark a type of service that allows people to get money from their bank account by using any of the cash machines that have a Cirrus sign on it. Cirrus is used by banks in many different countries.Origin cirrus (1700-1800) Latin “curl” 