bolthead
/ˈboʊltˌhɛd/
noun
- The head of a bolt (the fastener), usually the part that is turned with a tool.
- The bolthead snapped off when he applied too much force.
- The bolthead was rusted, making it hard to turn with the wrench.
- He used a socket that fit perfectly over the bolthead.
- A type of round-bottomed glass flask with a long neck, used in chemistry (also called a Florence flask).
- She poured the solution into a bolthead for distillation.
- The chemist heated the liquid in a bolthead over the Bunsen burner.
- The bolthead cracked when it was placed directly on the hot plate.