1. [n]  small branch or division of a branch; usually applied to branches of the current or preceding year
2. [v]  branch out in a twiglike manner; "The lightning bolt twigged in several directions"
3. [v]  understand, usually after some initial difficulty

1. \Twig\, v. t. [imp. & p. p. {Twigged}; p. pr. & vb. n.
   {Twigging}.] [Cf. {Tweak}.]
   To twitch; to pull; to tweak. [Obs. or Scot.]
   

2. \Twig\, v. t. [Gael. tuig, or Ir. tuigim I understand.]
   1. To understand the meaning of; to comprehend; as, do you
      twig me? [Colloq.] --Marryat.
   2. To observe slyly; also, to perceive; to discover. ``Now
      twig him; now mind him.'' --Foote.
            As if he were looking right into your eyes and
            twigged something there which you had half a mind to
            conceal.                              --Hawthorne.
   

3. \Twig\, n. [AS. twig; akin to D. twijg, OHG. zwig, zwi, G.
   zweig, and probably to E. two.]
   A small shoot or branch of a tree or other plant, of no
   definite length or size.
         The Britons had boats made of willow twigs, covered on
         the outside with hides.                  --Sir T.
                                                  Raleigh.
   {Twig borer} (Zo["o]l.), any one of several species of small
      beetles which bore into twigs of shrubs and trees, as the
      apple-tree twig borer ({Amphicerus bicaudatus}).
   {Twig girdler}. (Zo["o]l.) See {Girdler}, 3.
   {Twig rush} (Bot.), any rushlike plant of the genus {Cladium}
      having hard, and sometimes prickly-edged, leaves or
      stalks. See {Saw grass}, under {Saw}.
   

4. \Twig\, v. t.
   To beat with twigs.
   

Tree-Walking Instruction Generator.

A code generator language. ML-Twig is an SML/NJ variant.

["Twig Language Manual", S.W.K. Tijang, CS TR 120, Bell Labs, 1986].