rūš רוּשׁ ‘be poor’ (Hebrew)

Etymology^?: a primitive root

rūš v
1) to be poor, be in want, lack
 1a) (Qal)
  1a1) to be poor
  1a2) to be in want or hunger
  1a3) poor man (subst)
 1b)(Hithpolel) one impoverishing himself (participle)