Origin: Cf. Trill to trickle, Trickle, Dribble, and W. Rhillio to put in a row, drill.
Drill is used adjectively, or as the first part of a compound; as, drill barrow or drill-barrow; drill husbandry; drill plow or drill-plow. Drill barrow, a wheeled implement for planting seed in drills. Drill bow, a small bow used for the purpose of rapidly turning a drill around which the bowstring takes a turn. Drill harrow, a harrow used for stirring the ground between rows, or drills. Drill plow, or Drill plough, a sort plow for sowing grain in drills.
1. An instrument with an edged or pointed end used for making holes in hard substances; strictly, a tool that cuts with its end, by revolving, as in drilling metals, or by a succession of blows, as in drilling stone; also, a drill press.
2. The act or exercise of training soldiers in the military art, as in the manual of arms, in the execution of evolutions, and the like; hence, diligent and strict instruction and exercise in the rudiments and methods of any business; a kind or method of military exercises; as, infantry drill; battalion drill; artillery drill.
4. <zoology> A marine gastropod, of several species, which kills oysters and other bivalves by drilling holes through the shell. The most destructive kind is Urosalpinx cinerea. Bow drill, Breast drill. See Bow, Breast. Cotter drill, or Traverse drill, a machine tool for drilling slots. Diamond drill. See Diamond. Drill jig. See Jig. Drill pin, the pin in a lock which enters the hollow stem of the key. Drill sergeant, a noncommissioned officer whose office it is to instruct soldiers as to their duties, and to train them to military exercises and evolutions. Vertical drill, a drill press.
Origin: Cf. Mandrill.
(01 Mar 1998)
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