Heb. deber, "destruction," a "great mortality", the fifth plague that fell upon the Egyptians ( Exodus 9:3 ). It was some distemper that resulted in the sudden and widespread death of the cattle. It was confined to the cattle of the Egyptians that were in the field ( 9:6 ).

These dictionary topics are from
M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition,
published by Thomas Nelson, 1897. Public Domain, copy freely.