Brown Driver Briggs

 1. to crush, oppress
  1) (Qal)
1a1. to crush, get crushed, be crushed
1a2. to crush, oppress (fig)
1a3. crushed (participle passive)
  2) (Niphal) to be crushed, be broken
  3) (Piel)
1c1. to crush in pieces
1c2. to grievously oppress (fig)
  4) (Poel) to oppress (fig)
  5) (Hiphil) to crush
  6) (Hithpoel) to crush each other