stapled

noun

1. the chief commodity, or any of the most important commodities, made, grown, or sold in a particular place, region, country, etc.
2. a chief item, part, material, or element in anything
3. any chief item of trade, regularly stocked and in constant demand: flour, sugar, and salt are staples
4. the fiber of cotton, wool, flax, etc., with reference to length and fineness

Origin: ME stapel < OFr estaple < MDu stapel, mart, emporium, post, orig. support, akin to staple

adjective

1. regularly found on the market or in stock as a result of a constant demand
2. produced, consumed, or exported regularly and in quantity
3. most important; leading; principal: staple industries

transitive verb stapled, stapling