Source : Webster's Revised Unabridged Dictionary (1913)

Breste \Bres"te\, v. t. & i. [imp. {Brast}; p. p. {Brusten},
   {Borsten}, {Bursten}.]
   To burst. [Obs.] --Chaucer.

Bursten \Burst"en\,
   p. p. of {Burst}, v. i. [Obs.]