BT Šab 20a(42) :קנים מבדרן, אגדן לא מבדרן, גרענין מבדרן, נתנן בחותלות לא מבדרן‏ : reeds can be fired: in bunches they are not fired, as kernels they are; (if) he put them in baskets, they are not subject to spreading fire
See the entire entry for bdr vb. to disperse; D to scatter