breast drill
Noun: A breast drill is a hand-powered, portable drilling tool. Its defining feature is a flat plate (the breastplate) that the operator presses against their chest or upper body. This pressure provides the force needed to push the drill bit into the material being worked on, while the operator turns a crank handle to rotate the bit.
The term breast drill is used specifically to name this type of manual drill. It is a compound noun where "breast" refers to the part of the body used to apply force. - It is typically used in contexts involving traditional woodworking, metalworking, or historical tool collections. - Example: The carpenter used a breast drill to bore precise holes in the oak beam before modern electric drills were common.
- The breast drill is often contrasted with other manual drills like the brace (which uses rotational force from the shoulder) or the hand drill (which is geared and held away from the body). The key differentiator is the method of applying pressure via the chest.
- Breastplate: The specific part of the drill that contacts the user's chest.
- Hand drill: A broader category of portable, manually operated drills. A breast drill is a specific type of hand drill.
- Brace and bit: Another style of manual drill, operated with a sweeping motion of the hand and arm, not chest pressure.
- Chest drill (a less common but descriptive synonym).
- Manual drill (a more general term that includes breast drills, braces, and other non-powered drills).
There are no common idioms or phrasal verbs specifically for the compound noun "breast drill." It is a technical term for a tool.
- a portable drill with a plate that is pressed against the chest to force the drill point into the work