Source : Webster's Revised Unabridged Dictionary (1913)

Twit \Twit\, v. t. [imp. & p. p. {Twitted}; p. pr. & vb. n.
   {Twitting}.] [OE. atwiten, AS. [ae]tw[=i]tan to reproach,
   blame; [ae]t at + w[=i]tan to reproach, blame; originally, to
   observe, see, hence, to observe what is wrong (cf. the
   meanings of E. animadvert; akin to G. verweisen to censure,
   OHG. firw[=i]zan, Goth. traweitan to avenge, L. videre to
   see. See {Vision}, {Wit}.]
   To vex by bringing to notice, or reminding of, a fault,
   defect, misfortune, or the like; to revile; to reproach; to
   upbraid; to taunt; as, he twitted his friend of falsehood.

         This these scoffers twitted the Christian with.
                                                  --Tillotson.

         [AE]sop minds men of their errors, without twitting
         them for what is amiss.                  --L'Estrange.

Source : WordNet®

twit
     n 1: someone who is regarded as contemptible [syn: {twerp}, {twirp}]
     2: aggravation by deriding or mocking or criticizing [syn: {taunt},
         {taunting}]
     [also: {twitting}, {twitted}]

twit
     v : harass with persistent criticism or carping; "The children
         teased the new teacher"; "Don't ride me so hard over my
         failure"; "His fellow workers razzed him when he wore a
         jacket and tie" [syn: {tease}, {razz}, {rag}, {cod}, {tantalize},
          {tantalise}, {bait}, {taunt}, {rally}, {ride}]
     [also: {twitting}, {twitted}]