The Collaborative International Dictionary of English v.0.48:

Stub \Stub\, n. [OE. stubbe, AS. stub, styb; akin to D. stobbe,
   LG. stubbe, Dan. stub, Sw. stubbe, Icel. stubbr, stubbi; cf.
   Gr. ?.]
   1. The stump of a tree; that part of a tree or plant which
      remains fixed in the earth when the stem is cut down; --
      applied especially to the stump of a small tree, or shrub.
      [1913 Webster]

            Stubs sharp and hideous to behold.    --Chaucer.
      [1913 Webster]

            And prickly stubs instead of trees are found.
                                                  --Dryden.
      [1913 Webster]

   2. A log; a block; a blockhead. [Obs.] --Milton.
      [1913 Webster]

   3. The short blunt part of anything after larger part has
      been broken off or used up; hence, anything short and
      thick; as, the stub of a pencil, candle, or cigar.
      [1913 Webster]

   4. A part of a leaf in a check book, after a check is torn
      out, on which the number, amount, and destination of the
      check are usually recorded.
      [1913 Webster]

   5. A pen with a short, blunt nib.
      [1913 Webster]

   6. A stub nail; an old horseshoe nail; also, stub iron.
      [1913 Webster]

   Stub end (Mach.), the enlarged end of a connecting rod, to
      which the strap is fastened.

   Stub iron, iron made from stub nails, or old horseshoe
      nails, -- used in making gun barrels.

   Stub mortise (Carp.), a mortise passing only partly through
      the timber in which it is formed.

   Stub nail, an old horseshoe nail; a nail broken off; also,
      a short, thick nail.

   Stub short, or Stub shot (Lumber Manuf.), the part of the
      end of a sawn log or plank which is beyond the place where
      the saw kerf ends, and which retains the plank in
      connection with the log, until it is split off.

   Stub twist, material for a gun barrel, made of a spirally
      welded ribbon of steel and stub iron combined.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Stub \Stub\, v. t. [imp. & p. p. Stubbed; p. pr. & vb. n.
   Stubbing.]
   1. To grub up by the roots; to extirpate; as, to stub up
      edible roots.
      [1913 Webster]

            What stubbing, plowing, digging, and harrowing is to
            a piece of land.                      --Berkley.
      [1913 Webster]

   2. To remove stubs from; as, to stub land.
      [1913 Webster]

   3. To strike as the toes, against a stub, stone, or other
      fixed object. [U. S.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

stub
    n 1: a short piece remaining on a trunk or stem where a branch
         is lost
    2: a small piece; "a nub of coal"; "a stub of a pencil" [syn:
       nub, stub]
    3: a torn part of a ticket returned to the holder as a receipt
       [syn: stub, ticket stub]
    4: the part of a check that is retained as a record [syn:
       stub, check stub, counterfoil]
    5: the small unused part of something (especially the end of a
       cigarette that is left after smoking) [syn: butt, stub]
    v 1: pull up (weeds) by their roots
    2: extinguish by crushing; "stub out your cigarette now"
    3: clear of weeds by uprooting them; "stub a field"
    4: strike (one's toe) accidentally against an object; "She
       stubbed her toe in the dark and now it's broken"

Moby Thesaurus II by Grady Ward, 1.0:

81 Moby Thesaurus words for "stub":
   Thule, Ultima Thule, billhead, bitter end, book stamp, bookplate,
   bottom dollar, boundary, brand, broad arrow, brush, butt, butt end,
   cachet, carton of cigarettes, cauda, caudal appendage, caudation,
   check, cig, cigarette, cigarette butt, cigarette case, colophon,
   counterfoil, countermark, cue, deck of cigarettes, dock, docket,
   end, extreme, extremity, fag, fag end, fantail, farthest bound,
   government mark, government stamp, hallmark, imprint,
   jumping-off place, label, letterhead, limit, logo, logotype,
   masthead, nib, pigtail, plate, point, pole, price tag, queue,
   rattail, receipt, registered trademark, remnant, running head,
   running title, seal, sigil, signet, snipe, stamp, sticker, stump,
   tag, tag end, tail, tail end, tailpiece, tally, ticket, tip,
   title page, token, trade name, trademark, trademark name



The Free On-line Dictionary of Computing (30 December 2018):

stub

   1.  A dummy procedure used when linking a program
   with a run-time library.  The stub routine need not contain
   any code and is only present to prevent "undefined label"
   errors at link time.

   2.  A local procedure in a remote
   procedure call.  The client calls the stub to perform some
   task and need not necessarily be aware that RPC is involved.
   The stub transmits parameters over the network to the server
   and returns the results to the caller.

   (1995-11-09)