Brown Driver Briggs

 1. to swallow down, swallow up, engulf, eat up
  1) (Qal)
1a1. to swallow down
1a2. to swallow up, engulf
  2) (Niphal) to be swallowed up
  3) (Piel)
1c1. to swallow
1c2. to swallow up, engulf
1c3. squandering (fig.)
  4) (Pual) to be swallowed up
  5) (Hithpael) to be ended