Bible Dictionaries
Bolthead

Webster's Dictionary

(1):

(n.) A long, straight-necked, glass vessel for chemical distillations; - called also a matrass or receiver.

(2):

(n.) The head of a bolt.

Bibliography Information
Webster, Noah. Entry for 'Bolthead'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​b/bolthead.html. 1828.