From dabar (in the sense of destroying); a pestilence -- murrain, pestilence, plague.
see HEBREW dabar
H1698. deber
דֶּ֫בֶר49 noun masculine pestilence (compare Arabic , , departure, death) — Exodus 9:3 +; דָּ֑בֶר Habakkuk 3:5; suffix דְּבָרֶיךָ Hosea 13:14; —
1 plague, pestilence, in General Exodus 5:3; 9:15; Numbers 14:12 (J) Leviticus 26:25 (H) Deuteronomy 28:21; 2 Samuel 24:13, 15 (+ 24:15 a ᵐ5 We Dr) = 1 Chronicles 21:12, 14; 1 Kings 8:37 2 Chronicles 6:28; 7:13; 20:9; Psalm 91:3; 91:6; Jeremiah 14:12 16t. Jeremiah; Ezekiel 5:12 11t. Ezekiel; Hosea 13:14; Amos 4:10; Habakkuk 3:5. Read וּבַדָּ֑בֶר, or the like, 1 Samuel 4:8, for בַּמִּדְבָּר ᵑ0, We Klo Dr.
2 cattle-plague, murrain Exodus 9:3 (J) = Psalm 78:50.