ʾarbeh אַרְבֶּה ‘locust’ (Hebrew)
Etymology?: 
 
from rāvā רָבָה ‘to multiply / to shoot’
Roots: 
  
    רבה
  
ʾarbeh n, m 
1) a kind of locust, locust swarm (coll)
2) (CLBL)
 2a) sudden disappearance (fig.)
 2b) insignificance (fig.)
 2c) activity (fig.)