ppl. a. (UN-1 8 b; cf. UNBROSTEN.)

1

1782.  F. Douglas, E. Coast Scot., 44. In one of them [streets], called the Murray-gate, in compliment to the guid regent, several bombs, unburst, were lately found, deep sunk in the earth.

2

1855.  T. R. Jones, Anim. Kingd. (ed. 2), 333. Another membrane, which in the unburst egg is external to this and lines the interior of the shell.

3