bolthead (plural boltheads)
(chemistry) A round-bottomed flask with a long neck (used especially for distillation)
The head of a bolt.
• Theobald, head bolt, head-bolt, headbolt
Source: Wiktionary
Bolt"head` (, n.
1. (Chem.)
Definition: A long, straightnecked, glass vessel for chemical distillations; -- called also a matrass or receiver.
2. The head of a bolt.
Source: Webster’s Unabridged Dictionary 1913 Edition
8 January 2025
(noun) Eurasian maple tree with pale grey bark that peels in flakes like that of a sycamore tree; leaves with five ovate lobes yellow in autumn
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