PLOW; PLOUGH v.
To cut a groove in, as in a plank, or the edge of a board; especially, a rectangular groove to receive the end of a shelf or tread, the edge of a panel, a tongue, etc. To plow in, to cover by plowing; as, to plow in wheat. -- To plow up, to turn out of the ground by plowing.plow ahead, to continue in spite of obstacle…
PROJECTION n.
representing the sphere, the spherical surface being projected upon the surface of a cone tangent to the sphere, the point of sight being at the center of the sphere. -- Cylindric projection, a mode of representing the sphere, the spherical surface being projected upon the surface of a cylinder touching the sphere, th…