all clear |
the signal that an air raid or disaster drill is over. |
bit1 |
the part of a drill that is pointed and makes holes. [1/2 definitions] |
bore1 |
to make a hole in with a tool such as a drill. [3 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 part of a drill. The chuck holds the long metal piece that cuts the hole. |
derrick |
a tower built over an oil well or other drill hole. It is used to support and move equipment. [1/2 definitions] |
DI |
abbreviation of "drill instructor." |
drill1 |
to produce using a drill. [1/4 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] |