The Collaborative International Dictionary of English v.0.48:

Bream \Bream\, v. t. [imp. & p. p. Breamed; p. pr. & vb. n.
   Breaming.] [Cf. Broom, and G. ein schiff brennen.]
   (Naut.)
   To clean, as a ship's bottom of adherent shells, seaweed,
   etc., by the application of fire and scraping.
   [1913 Webster]