from בָּרָה (in the sense of cutting (like בָּרָא)); a compact (because made by passing between pieces of flesh); confederacy, (con-) feder(-ate), covenant, league.
a primitive root; properly, to be burly, i.e. (figuratively) powerful (passively, impregnable); by implication, to ravage; dead, destroy(-er), oppress, robber, spoil(-er), [idiom] utterly, (lay) waste.