The Collaborative International Dictionary of English v.0.48:

Bren \Bren\, Brenne \Bren"ne\, v. t. & i. [imp. & p. p. Brent
   (?); p. pr. & vb. n. Brenning.] [See Burn.]
   To burn. [Obs.] --Chaucer.
   [1913 Webster]

         Consuming fire brent his shearing house or stall. --W.
                                                  Browne.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bren \Bren\, n.
   Bran. [Obs.] --Chaucer.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Bren
    n 1: a submachine gun operated by gas pressure; used by the
         British in World War II [syn: Bren, Bren gun]