That which covers or conceals; a cover; something spread or laid over or wrapped about another.
Action of the verb to cover.
A continuous map onto a topological space X, 𝜋:E→X, such that there exists a discrete space D and for every x∈X an open neighborhood U⊂X, such that 𝜋⁻¹(U)= displaystyle bigsqcup _(d∈D)V_d and 𝜋|_(V_d):V_d→U is a homeomorphism for every d∈D.
An object serving as a simplified interface to a larger body of code, as in the facade pattern.
A deceptive or insincere outward appearance.
The face or front (most visible side) of any other thing, such as an organ.
The face of a building, especially the front view or elevation.