The Collaborative International Dictionary of English v.0.48:

Dub \Dub\ (d[u^]b), v. t. [imp. & p. p. Dubbed (d[u^]bd); p.
   pr. & vb. n. Dubbing.] [AS. dubban to strike, beat
   ("dubbade his sunu . . . to r[imac]dere." --AS. Chron. an.
   1086); akin to Icel. dubba; cf. OF. adouber (prob. fr. Icel.)
   a chevalier, Icel. dubba til riddara.]
   1. To confer knighthood upon; as, the king dubbed his son
      Henry a knight.
      [1913 Webster]

   Note: The conclusion of the ceremony was marked by a tap on
         the shoulder with the sword.
         [1913 Webster]

   2. To invest with any dignity or new character; to entitle;
      to call.
      [1913 Webster]

            A man of wealth is dubbed a man of worth. --Pope.
      [1913 Webster]

   3. To clothe or invest; to ornament; to adorn. [Obs.]
      [1913 Webster]

            His diadem was dropped down
            Dubbed with stones.                   --Morte
                                                  d'Arthure.
      [1913 Webster]

   4. To strike, rub, or dress smooth; to dab; as:
      (a) To dress with an adz; as, to dub a stick of timber
          smooth.
          [1913 Webster]
      (b) To strike cloth with teasels to raise a nap.
          --Halliwell.
      (c) To rub or dress with grease, as leather in the process
          of cyrrying it. --Tomlinson.
      (d) To prepare for fighting, as a gamecock, by trimming
          the hackles and cutting off the comb and wattles.
          [1913 Webster]

   To dub a fly, to dress a fishing fly. [Prov. Eng.]
      --Halliwell.

   To dub out (Plastering), to fill out, as an uneven surface,
      to a plane, or to carry out a series of small projections.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dub \Dub\ (d[u^]b), v. i.
   To make a noise by brisk drumbeats. "Now the drum dubs."
   --Beau. & Fl.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dub \Dub\ (d[u^]b), v. t.
   1. to add sound to an existing recording, audio or video; --
      often used with in. The sound may be of any type or of any
      duration.
      [PJC]

   2. to mix together two or more sound or video recordings to
      produce a composite recording.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Dub \Dub\, n.
   A blow. [R.] --Hudibras.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dub \Dub\, n. [Cf. Ir. d['o]b mire, stream, W. dwvr water.]
   A pool or puddle. [Prov. Eng.] --Halliwell.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dubb \Dubb\, n. [Ar.] (Zool.)
   The Syrian bear. See under Bear. [Written also dhubb, and
   dub.]
   [1913 Webster]

WordNet (r) 3.0 (2006):

dub
    n 1: the new sounds added by dubbing
    v 1: give a nickname to [syn: dub, nickname]
    2: provide (movies) with a soundtrack of a foreign language
    3: raise (someone) to knighthood; "The Beatles were knighted"
       [syn: knight, dub]

Moby Thesaurus II by Grady Ward, 1.0:

65 Moby Thesaurus words for "dub":
   baptize, blow, blunder, bobble, boggle, bollix, butterfingers,
   call, christen, clumsy, dab, define, denominate, designate, double,
   drag, dress, duffer, entitle, equalize, even, flatten, flub, fluff,
   foozler, foul-up, fumble-fist, goof, goof up, goofball, goofer,
   grade, grease, harrow, hick, identify, label, lay, level,
   lubricate, lummox, lump, mow, muff, muffer, name, nickname,
   nominate, oil, plane, planish, plaster, rube, shave, slob, smooth,
   smooth down, smooth out, specify, stumblebum, stumblebunny, style,
   tag, term, title