Probably from guwb (compare gowb); a locust (from its cutting) -- locust.
see HEBREW guwb
see HEBREW gowb
H1357. geb
I. [גֵּב] locust, see below גבה.
I. [גֵּב] noun [masculine] locust (name from swarm, collection, Ethiopic compare also Ethiopic locust √ = Arabic scaturivit, manavit), only plural גֵּבִים Isaiah 33:4 (in simile of leaping). — גֵּב II, III, see below גוב.