Throttle-valve

throt'l-valv,. s. in steam-engines, a valve for regulating the supply of steam to the cylinder. Through, throo, prep. from end to end, or from side to side; noting pa age; by transmi ion; by means of; by the agency of; by reason of; over the whole surface of; by pa ing among or in the midst of: ad. from one end or side to the other from beginning toend; to the ultimate purpose. To carry through, to accomplish. To go through, to prosecute a scheme to the end; to undergo (A.S. thurh, Ger. durch). See Thorough.