And they shall turn
zanach  (zaw-nakh')
cast away (off), remove far away (off).
the rivers
nahar  (naw-hawr')
a stream (including the sea; expec. the Nile, Euphrates, etc.); figuratively, prosperity -- flood, river.
far away
zanach  (zaw-nakh')
cast away (off), remove far away (off).
and the brooks
y`or  (yeh-ore')
brook, flood, river, stream.
of defence
matsowr  (maw-tsore')
Egypt (as the border of Palestine) -- besieged places, defense, fortified.
shall be emptied
dalal  (daw-lal')
to slacken or be feeble; figuratively, to be oppressed -- bring low, dry up, be emptied, be not equal, fail, be impoverished, be made thin.
and dried up
charab  (khaw-rab')
to parch (through drought) i.e. (by analogy,) to desolate, destroy, kill -- decay, (be) desolate, destroy(-er), (be) dry (up), slay, surely, (lay, lie, make) waste.
the reeds
qaneh  (kaw-neh')
a reed (as erect); by resemblance a rod (especially for measuring), shaft, tube, stem, the radius (of the arm), beam (of a steelyard)
and flags
cuwph  (soof)
a reed, especially the papyrus -- flag, Red (sea), weed.
shall wither
qamal  (kaw-mal')
to wither -- hew down, wither.