Any longitudinal piece, as in shipbuilding etc.
A railway sleeper lying parallel with the rail.
Relating to length, or to longitude.
Running in the direction of the long axis of a body.
Forward and/or backward, relative to some defined direction.
Sampling data over time rather than merely once.
The outside hull of a tangible object.
Outward or external appearance.
The overside or up-side of a flat object such as a table, or of a liquid.
The locus of an equation (especially one with exactly two degrees of freedom) in a more-than-two-dimensional space.
To apply a surface to something.
To make (information or facts) known.
To become known or apparent; to appear or be found.
To provide something with a surface.
To bring to the surface.
To come out of hiding.
To work a mine near the surface.
To rise to the surface.