rāqaʿ רָקַע ‘to beat’ (Hebrew)

Etymology^?: a primitive root

rāqaʿ v
1) to beat, stamp, beat out, spread out, stretch
 1a) (Qal)
  1a1) to stamp, beat out
  1a2) one who beats out (participle)
 1b) (Piel) to overlay, beat out (for plating)
 1c) (Pual) beaten out (participle)
 1d) (Hiphil) to make a spreading (of clouds)