The Collaborative International Dictionary of English v.0.48:

Bunsen burner \Bun"sen burn"er\, Bunsen's burner \Bun"sen's
burn"er\(Chem.),
   a kind of burner, invented by Professor Bunsen of Heidelberg,
   consisting of a straight tube, four or five inches in length,
   having small holes for the entrance of air at the bottom.
   Illuminating gas being also admitted at the bottom, a mixture
   of gas and air is formed which burns at the top with a feebly
   luminous but intensely hot flame.
   [1913 Webster]

WordNet (r) 3.0 (2006):

bunsen burner
    n 1: a gas burner used in laboratories; has an air valve to
         regulate the mixture of gas and air [syn: bunsen burner,
         bunsen, etna]