early 15c., "to shut out, exclude," from French débarrer, from Old French desbarer (12c., which, however, meant only "to unbar, unbolt," the meaning turned around in French as the de- was felt in a different sense), from des- (see dis-) + barrer "to bar" (see bar (n.1)). Related: Debarment; debarred.
1. Estimate , debar and repair the failure of network and computers.
2. The railroad gates debar people from crossing the tracks.