A horizontal or transverse beam or similar member that extends across or perpendicular to something.
A bar or timber connecting two knightheads or two bitts; a timber over the windlass, with pins for belaying the running rigging.
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.