What is the meaning of Surface?

The overside or up-side of a flat object such as a table, or of a liquid.

The outside hull of a tangible object.

Outward or external appearance.

The locus of an equation (especially one with exactly two degrees of freedom) in a more-than-two-dimensional space.

To provide something with a surface.

To apply a surface to something.

To rise to the surface.

To bring to the surface.

To come out of hiding.

To become known or apparent; to appear or be found.

To make (information or facts) known.

To work a mine near the surface.

surface

Source: wiktionary.org