bolthead

1 definition found

bolthead - Collaborative International Dictionary of English v.0.48 :

  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]