business endbusiness end
Informal the end or part of a tool, weapon, etc. most directly involved in carrying out the device's function
The part of a weapon or tool, usually at the front, that inflicts damage or performs work.
(plural business ends)
- (idiomatic) The part of a tool or other similar item, that is physically used for its operation, rather than the part which is held.
- The business end of a hammer is known as the "head".