groundline

Etymology

From ground + line.

groundline means A line drawn to signify the surface of the ground, especially in architectural blueprints and in drawings by children which lack dimension. Lexicurio rates it Sui generis — a strength score of 90 out of 100.

noun

A line drawn to signify the surface of the ground, especially in architectural blueprints and in drawings by children which lack dimension.
In equestrian show jumping, a marker such as a row of flowers which signifies the point from which a horse should begin a jump over an obstacle.
A weighted fishing line that lies along the floor of the body of water in which the user is fishing.