Source : Webster's Revised Unabridged Dictionary (1913)

Haw \Haw\, v. t.
   To cause to turn, as a team, to the near side, or toward the
   driver; as, to haw a team of oxen.

   {To haw and gee}, or {To haw and gee about}, to lead this way
      and that at will; to lead by the nose; to master or
      control. [Colloq.]

Haw \Haw\, n. [OE. hawe, AS. haga; akin to D. haag headge, G.
   hag, hecke, Icel. hagi pasture, Sw. hage, Dan. have garden.
   ???. Cf. {Haggard}, {Ha-ha}, {Haugh}, {Hedge}.]
   1. A hedge; an inclosed garden or yard.

            And eke there was a polecat in his haw. --Chaucer.

   2. The fruit of the hawthorn. --Bacon.

Haw \Haw\, n. [Etymol. uncertain.] (Anat.)
   The third eyelid, or nictitating membrane. See {Nictitating
   membrane}, under {Nictitate}.

Haw \Haw\, n. [Cf. ha an interjection of wonder, surprise, or
   hesitation.]
   An intermission or hesitation of speech, with a sound
   somewhat like haw! also, the sound so made. ``Hums or haws.''
   --Congreve.

Haw \Haw\, v. i.
   To stop, in speaking, with a sound like haw; to speak with
   interruption and hesitation.

         Cut it short; don't prose -- don't hum and haw.
                                                  --Chesterfield.

Haw \Haw\, v. i. [imp. & p. p. {Hawed}; p. pr. & vb. n.
   {Hawing}.] [Written also hoi.] [Perhaps connected with here,
   hither; cf., however, F. huhau, hue, interj. used in turning
   a horse to the right, G. hott, h["u], interj. used in calling
   to a horse.]
   To turn to the near side, or toward the driver; -- said of
   cattle or a team: a word used by teamsters in guiding their
   teams, and most frequently in the imperative. See {Gee}.

   {To haw and gee}, or {To haw and gee about}, to go from one
      thing to another without good reason; to have no settled
      purpose; to be irresolute or unstable. [Colloq.]

Source : WordNet®

haw
     n 1: a spring-flowering shrub or small tree of the genus
          Crataegus [syn: {hawthorn}]
     2: the nictitating membrane of a horse

haw
     v : utter `haw'; "he hemmed and hawed"