Source : Webster's Revised Unabridged Dictionary (1913)

Dig \Dig\, n.
   1. A tool for digging. [Dial. Eng.]

   2. An act of digging.

   3. An amount to be dug.

   4. (Mining) = {Gouge}.

Dig \Dig\, v. i.
   1. To work hard or drudge; specif. (U. S.): To study
      ploddingly and laboriously. [Colloq.]

            Peter dug at his books all the harder. --Paul L.
                                                  Ford.

   2. (Mach.) Of a tool: To cut deeply into the work because ill
      set, held at a wrong angle, or the like, as when a lathe
      tool is set too low and so sprung into the work.

   {To dig out}, to depart; to leave, esp. hastily; decamp.
      [Slang, U. S.]

Dig \Dig\, v. t. [imp. & p. p. {Dug}or {Digged}; p. pr. & vb. n.
   {Digging}. -- Digged is archaic.] [OE. diggen, perh. the same
   word as diken, dichen (see {Dike}, {Ditch}); cf. Dan. dige to
   dig, dige a ditch; or (?) akin to E. 1st dag. ???.]
   1. To turn up, or delve in, (earth) with a spade or a hoe; to
      open, loosen, or break up (the soil) with a spade, or
      other sharp instrument; to pierce, open, or loosen, as if
      with a spade.

            Be first to dig the ground.           --Dryden.

   2. To get by digging; as, to dig potatoes, or gold.

   3. To hollow out, as a well; to form, as a ditch, by removing
      earth; to excavate; as, to dig a ditch or a well.

   4. To thrust; to poke. [Colloq.]

            You should have seen children . . . dig and push
            their mothers under the sides, saying thus to them:
            Look, mother, how great a lubber doth yet wear
            pearls.                               --Robynson
                                                  (More's
                                                  Utopia).

   {To dig down}, to undermine and cause to fall by digging; as,
      to dig down a wall.

   {To dig from}, {out of}, {out}, or {up}, to get out or obtain
      by digging; as, to dig coal from or out of a mine; to dig
      out fossils; to dig up a tree. The preposition is often
      omitted; as, the men are digging coal, digging iron ore,
      digging potatoes.

   {To dig in}, to cover by digging; as, to dig in manure.

Dig \Dig\, n.
   1. A thrust; a punch; a poke; as, a dig in the side or the
      ribs. See {Dig}, v. t., 4. [Colloq.]

   2. A plodding and laborious student. [Cant, U.S.]

Dig \Dig\, v. i.
   1. To work with a spade or other like implement; to do
      servile work; to delve.

            Dig for it more than for hid treasures. --Job iii.
                                                  21.

            I can not dig; to beg I am ashamed.   --Luke xvi. 3.

   2. (Mining) To take ore from its bed, in distinction from
      making excavations in search of ore.

   3. To work like a digger; to study ploddingly and
      laboriously. [Cant, U.S.]

Source : WordNet®

dig
     n 1: the site of an archeological exploration; "they set up camp
          next to the dig" [syn: {excavation}, {archeological site}]
     2: an aggressive remark directed at a person like a missile and
        intended to have a telling effect; "his parting shot was
        `drop dead'"; "she threw shafts of sarcasm"; "she takes a
        dig at me every chance she gets" [syn: {shot}, {shaft}, {slam},
         {barb}, {jibe}, {gibe}]
     3: a small gouge (as in the cover of a book); "the book was in
        good condition except for a dig in the back cover"
     4: the act of digging; "there's an interesting excavation going
        on near Princeton" [syn: {excavation}, {digging}]
     5: the act of touching someone suddenly with your finger or
        elbow; "she gave me a sharp dig in the ribs" [syn: {jab}]
     [also: {dug}, {digging}]

dig
     v 1: turn up, loosen, or remove earth; "Dig we must"; "turn over
          the soil for aeration" [syn: {delve}, {cut into}, {turn
          over}]
     2: create by digging; "dig a hole"; "dig out a channel" [syn: {dig
        out}]
     3: work hard; "She was digging away at her math homework";
        "Lexicographers drudge all day long" [syn: {labor}, {labour},
         {toil}, {fag}, {travail}, {grind}, {drudge}, {moil}]
     4: remove the inner part or the core of; "the mining company
        wants to excavate the hillsite" [syn: {excavate}, {hollow}]
     5: poke or thrust abruptly; "he jabbed his finger into her
        ribs" [syn: {jab}, {prod}, {stab}, {poke}]
     6: get the meaning of something; "Do you comprehend the meaning
        of this letter?" [syn: {get the picture}, {comprehend}, {savvy},
         {grasp}, {compass}, {apprehend}]
     [also: {dug}, {digging}]