The Collaborative International Dictionary of English v.0.48:

Dredge \Dredge\, v. t.
   To sift or sprinkle flour, etc., on, as on roasting meat.
   --Beau. & Fl.
   [1913 Webster]

   Dredging box.
   (a) Same as 2d Dredger.
   (b) (Gun.) A copper box with a perforated lid; -- used for
       sprinkling meal powder over shell fuses. --Farrow.
       [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dredge \Dredge\ (dr[e^]j), n. [F. dr[`e]ge, dreige, fish net,
   from a word akin to E. draw; cf. D. dreg, dregge, small
   anchor, dregnet dragnet. [root]73. See Draw.]
   1. Any instrument used to gather or take by dragging; as:
      (a) A dragnet for taking up oysters, etc., from their
          beds.
      (b) A dredging machine.
      (c) An iron frame, with a fine net attached, used in
          collecting animals living at the bottom of the sea.
          [1913 Webster]

   2. (Mining) Very fine mineral matter held in suspension in
      water. --Raymond.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dredge \Dredge\ (dr[e^]j), v. t. [imp. & p. p. Dredged
   (dr[e^]jd); p. pr. & vb. n. Dredging.]
   To catch or gather with a dredge; to deepen with a dredging
   machine. --R. Carew.
   [1913 Webster]

   Dredging machine, a machine (commonly on a boat) used to
      scoop up mud, gravel, or obstructions from the bottom of
      rivers, docks, etc., so as to deepen them.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dredge \Dredge\, n. [OE. dragge, F. drag['e]e, dredge, also,
   sugar plum; cf. Prov. dragea, It. treggea; corrupted fr. LL.
   tragemata, pl., sweetmeats, Gr. tragh`mata, fr. trw`gein to
   gnaw.]
   A mixture of oats and barley. [Obs.] --Kersey.
   [1913 Webster]

WordNet (r) 3.0 (2006):

dredge
    n 1: a power shovel to remove material from a channel or
         riverbed
    v 1: cover before cooking; "dredge the chicken in flour before
         frying it"
    2: search (as the bottom of a body of water) for something
       valuable or lost [syn: dredge, drag]
    3: remove with a power shovel, usually from a bottom of a body
       of water

Moby Thesaurus II by Grady Ward, 1.0:

123 Moby Thesaurus words for "dredge":
   avulse, besprinkle, bore, bread, breathe, brew, burrow, color,
   crumb, cut out, decoct, delve, deracinate, dig, dig out, dig up,
   digger, dike, disentangle, dot, drag up, draw, draw out, draw up,
   dredge up, dredger, drill, driller, drive, dust, dye, entincture,
   eradicate, evolve, evulse, excavate, excavator, excise, exsect,
   extract, extricate, fish up, flavor, flour, furrow, gather up,
   get out, gouge, gouge out, groove, groundhog, grub, grub up,
   haul up, imbrue, imbue, impregnate, infiltrate, infuse, instill,
   leaven, lower, mine, miner, navvy, penetrate, pepper, permeate,
   pervade, pick out, pick up, pluck out, pluck up, powder, pull,
   pull out, pull up, quarry, rake out, remove, rip out, root out,
   root up, sandhog, sap, sapper, saturate, scoop, scoop out,
   scrabble, scrape, scratch, season, shovel, sink, spade, spatter,
   speck, speckle, splatter, spot, sprinkle, steam shovel, steep,
   stud, suffuse, take out, take up, tear out, temper, tincture,
   tinge, transfuse, trench, trough, tunnel, tunneler, unearth,
   unravel, uproot, weed out, withdraw, wrest out



Easton's 1897 Bible Dictionary:

Dredge
   (Job 24:6). See CORN.