'Bolthead' definitions:
Definition of '
Bolthead
'
From:
GCIDE
Bolthead \Bolt"head`\, n.
1. (Chem.) A long, straight-necked, glass vessel for chemical distillations; -- called also a
matrass
or receiver. [1913 Webster]
2. The head of a bolt. [1913 Webster]
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