Allen screw
noun
Al·len screw ˈa-lən- 
hardware
: a screw with a hexagonal socket in its head that is designed to be used with an Allen wrench
Word History
First Known Use
1917, in the meaning defined above
- shopping bags
- shopping cart
- shopping center
- shopping for
- shopping goods
- shopping list
- shopping mall
- shopping spree
- shopping-bag lady
- shoppings
- shops
- shops (around)
- shops (for)
- shops around
- shops for
- shoptalk
- shoptalks
- shopwalker
- shopwalkers
- shopwindow
- shopwindows
- shopwomen
- shopwork
- shopworker
- shopworn