a lead weight attached to a line, cast overboard in shoal water and allowed to pay out freely to show the speed of a ship and the force of the current.
noun, Aeronautics. 1. a sharp horizontal loop performed, usually involuntarily, while touching the ground. noun 1. a sudden uncontrolled turn by an aircraft on the ground, while moving under its own power
[ground-mas] /ˈgraʊndˌmæs/ noun 1. the crystalline, granular, or glassy base or matrix of a porphyritic or other igneous rock, in which the more prominent crystals are embedded. /ˈɡraʊndˌmæs/ noun 1. the matrix of igneous rocks, such as porphyry, in which larger crystals (phenocrysts) are embedded
noun, Botany. 1. an area of primary meristematic tissue, emerging from and immediately behind the apical meristem, that develops into the pith and the cortex. ground meristem The primary meristem in vascular plants that gives rise to the nonvascular tissues, such as cortex, pericycle, and pith. Within the seeds of angiosperms, it surrounds the procambium.
[ground-nuht] /ˈgraʊndˌnʌt/ noun 1. Also called wild bean, potato bean. a twining, North American plant, Apios americana (or A. tuberosa), of the legume family, having clusters of fragrant brownish flowers and an edible tuber. 2. any of several other plants having edible underground parts, as the . 3. South Atlantic States. . /ˈɡraʊndˌnʌt/ noun 1. […]