(mathematics) A map from a topological space onto another by local homeomorphisms of disjoint preimages. / (mathematics, informal) The space so mapped.

(media) A story included in a publication that is highlighted on the front cover. / (espionage) A fictitious account that is intended to hide one's real motive.

(meteorology) The percentage or fraction of the sky obscured by clouds.

plural of covalence

plural of cover letter

plural of cover drive

(statistics) A variable that is possibly predictive of the outcome under study.

Alternative form of you can't judge a book by its cover

present participle of duck and cover

simple past tense and past participle of duck and cover