bolthead

[ bohlt-hed ]

noun

1. the head heads of a bolt.
2. Chemistry. (formerly) a matrass.

Word History and Origins

Origin of bolthead¹

late Middle English word dating back to 1425–75; bolt ¹, head

Example Sentences

The StubHub Center’s orange sea wasn’t exactly thrilled—the Chargers would go on to blank the visiting Broncos 21-zippo—but at least the Bolthead faithful had something to cheer about before Dean Spanos packs up and moves the team to his secret moon base or something.

From Golf Digest

Not far away was a tremendous assembling and repair plant for airplanes, the operators of which had all been trained in the French factories, so that they knew the planes to the last inner bolthead.

From Project Gutenberg

If I'd 'a' called it a bolthead it would 'a' done just as well.

From Project Gutenberg

This is only an easy way of applying an Index to any Common Barascope, whether the Glass be only a Single Cane, or have a round Bolthead at the top.

From Project Gutenberg

Let a condensed beam be sent through a large flask or bolthead containing common air.

From Project Gutenberg