n. [ L. altus high + L. & E. cumulus. ] (Meteor.) A fleecy cloud formation consisting of large whitish or grayish globular cloudlets with shaded portions, often grouped in flocks or rows. [ Webster 1913 Suppl. ]
n. [ Cirrus + cumulus. ] (Meteor.) See under Cloud. [ 1913 Webster ]
‖n.;
n. [ Stratus + cumulus. ] (Meteor.) Large balls or rolls of dark cloud which frequently cover the whole sky, esp. in winter, and give it at times an undulated appearance. [ Webster 1913 Suppl. ]