Staple (fastener), a formed metal fastener used to secure sheets of material or wires
Staple food, a foodstuff that forms the basic constituent of a diet. It is a standard commodity rather than a speciality item.
Staple (textiles) is the raw material, or its length and quality, of fibre from which textiles are made. It is the material in its standard form as a traded commodity.
The Staple Singers, a United States gospel, soul, and R&B singing group.
STAPLE!, a convention for creators of comics, minicomics, and other independent media
Places
A Staple port was one in which trade in specified goods was regulated. The term is a medieval one. Normally the king licensed a particular group of merchants to trade in the commodity, in an area such as his kingdom and their trading had to be done in the staple town or port.