From guwb; the locust (from its grubbing as a larvae) -- grasshopper, X great.
see HEBREW guwb
H1462. gob
גּוֺב noun [masculine] locusts, Nahum 3:17; compare גֹּבַי.
גּוֺבָ֑י גֹּבַי, noun masculineAmos 7:1, compare see 2
collective locusts (swarm, multitude; Aramaic גּוּבָא, plural גוּבָאֵי; on formative see Ol§ 216 d), גֹּבַי symbol of Yahweh's judgment on Israel Amos 7:1; in simile of disappearance of Assyrian leaders at destruction of Nineveh גּוֺבָ֑י גּוֺב Nahum 3:17 (locust-) swarm of locusts ("" אַרְבֶּה); but strike out גּוֺב as dittograph We and others