(mathematics) a set of entries in a square matrix running diagonally either from the upper left to lower right entry or running from the upper right to lower left entry
an oblique line of squares of the same color on a checkerboard; "the bishop moves on the diagonals"
a line or cut across a fabric that is not at right angles to a side of the fabric
(geometry) a straight line connecting any two vertices of a polygon that are not adjacent
at an angle; especially connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face; "a diagonal line across the page"
one of several parallel layers of material arranged one on top of another (such as a layer of tissue or cells in an organism or a layer of sedimentary rock)
the solid bony part of the tail of an animal as distinguished from the hair
landing in a harbor next to a pier where ships are loaded and unloaded or repaired; may have gates to let water in or out; "the ship arrived at the dock more than a day late"
an enclosure in a court of law where the defendant sits during the trial
a platform where trucks or trains can be loaded or unloaded
any of certain coarse weedy plants with long taproots, sometimes used as table greens or in folk medicine