| all clear |
the signal that an air raid or disaster drill is over. |
| bit1 |
the pointed tool that is fastened into a drill head for boring or drilling. [1/5 definitions] |
| bore1 |
to make a hole in with an instrument such as a drill. [3/7 definitions] |
| boring1 |
the act or process of making a hole or other opening with a drill or similar tool. [1/3 definitions] |
| brace and bit |
a drilling tool that consists of a drill bit rotated by a handle or brace. |
| burr1 |
any of several drill-like devices used by machinists and the like to cut away small amounts of hard material. [1/3 definitions] |
| chuck2 |
a device that holds a drill bit or that holds the material being shaped on a lathe. [1/2 definitions] |
| DI |
abbreviation of "drill instructor." |
| drill1 |
a tool consisting of a shaft that has sharp cutting edges and is used to make holes in wood, metal, or the like, usu. by means of rotation; drill bit. [5/13 definitions] |
| drill2 |
a group of seeds or plants planted in or by a drill. [1/5 definitions] |
| drillmaster |
someone who teaches or trains using drill methods, esp. in the military. |
| drillstock |
the part of a drilling machine or tool that tightens securely around the shank of a bit or drill; chuck. |
| flashcard |
any of a set of cards bearing words, numbers, or pictures, flashed briefly before a student or class to prompt a quick response in a drill. |
| jackhammer |
a hand-held device powered by compressed air, used to drill rock, cement, or the like; pneumatic drill. |
| machine tool |
an automatic or semiautomatic power-driven tool, such as a punch press, lathe, or drill, used to cut or shape metal in the manufacturing of machines and machine parts. |
| mandrel |
a shaft on which a working tool, such as a circular saw or a drill, is mounted and rotates. [1/2 definitions] |
| practice |
to drill or give repeated lessons to. [1/11 definitions] |
| rehearse |
to repeat (an action) or drill (an actor or other performer) in order to make perfect. [1/4 definitions] |
| rig |
the apparatus used to drill oil wells. [1/10 definitions] |
| tool |
an instrument, such as a hammer, drill, or other hand-held device, used for doing work. [2/8 definitions] |
| trepan |
to remove a circular section of; drill or cut with a trepan. [1/3 definitions] |