- (slang) A firearm.
- (informal) Equipment.
- Metal implements.
- Fixtures, equipment, tools and devices used for general-purpose construction and repair of a structure or object. Also such equipment as sold as stock by a store of the same name, e.g. hardware store.
"He needed a hammer, nails, screws, nuts, bolts and other assorted hardware, so he went to the hardware store."
- (technology) Electronic equipment.
- (computing) The part of a computer that is fixed and cannot be altered without replacement or physical modification; motherboard, expansion cards, etc. Compare software.