Source : Webster's Revised Unabridged Dictionary (1913)

Gall \Gall\, v. t. [imp. & p. p. {Galled}; p. pr. & vb. n.
   {Galling}.] [OE. gallen; cf. F. galer to scratch, rub, gale
   scurf, scab, G. galle a disease in horses' feet, an
   excrescence under the tongue of horses; of uncertain origin.
   Cf. {Gall} gallnut.]
   1. To fret and wear away by friction; to hurt or break the
      skin of by rubbing; to chafe; to injure the surface of by
      attrition; as, a saddle galls the back of a horse; to gall
      a mast or a cable.

            I am loth to gall a new-healed wound. --Shak.

   2. To fret; to vex; as, to be galled by sarcasm.

            They that are most galled with my folly, They most
            must laugh.                           --Shak.

   3. To injure; to harass; to annoy; as, the troops were galled
      by the shot of the enemy.

            In our wars against the French of old, we used to
            gall them with our longbows, at a greater distance
            than they could shoot their arrows.   --Addison.

Galling \Gall"ing\, a.
   Fitted to gall or chafe; vexing; harassing; irritating. --
   {Gall"ing*ly}, adv.

Source : WordNet®

galling
     adj : causing irritation or annoyance; "tapping an annoying rhythm
           on his glass with his fork"; "aircraft noise is
           particularly bothersome near the airport"; "found it
           galling to have to ask permission"; "an irritating
           delay"; "nettlesome paperwork"; "a pesky mosquito";
           "swarms of pestering gnats"; "a plaguey newfangled
           safety catch"; "a teasing and persistent thought
           annoyed him"; "a vexatious child"; "it is vexing to
           have to admit you are wrong" [syn: {annoying}, {bothersome},
            {irritating}, {nettlesome}, {pesky}, {pestering}, {pestiferous},
            {plaguy}, {plaguey}, {teasing}, {vexatious}, {vexing}]