Source : Webster's Revised Unabridged Dictionary (1913)

Speak \Speak\, v. i. [imp. {Spoke}({Spake}Archaic); p. p.
   {Spoken}({Spoke}, Obs. or Colloq.); p. pr. & vb. n.
   {Speaking}.] [OE. speken, AS. specan, sprecan; akin to
   OF.ries. spreka, D. spreken, OS. spreken, G. sprechen, OHG.
   sprehhan, and perhaps to Skr. sph[=u]rj to crackle, to
   thunder. Cf. {Spark} of fire, {Speech}.]
   1. To utter words or articulate sounds, as human beings; to
      express thoughts by words; as, the organs may be so
      obstructed that a man may not be able to speak.

            Till at the last spake in this manner. --Chaucer.

            Speak, Lord; for thy servant heareth. --1 Sam. iii.
                                                  9.

   2. To express opinions; to say; to talk; to converse.

            That fluid substance in a few minutes begins to set,
            as the tradesmen speak.               --Boyle.

            An honest man, is able to speak for himself, when a
            knave is not.                         --Shak.

            During the century and a half which followed the
            Conquest, there is, to speak strictly, no English
            history.                              --Macaulay.

   3. To utter a speech, discourse, or harangue; to adress a
      public assembly formally.

            Many of the nobility made themselves popular by
            speaking in Parliament against those things which
            were most grateful to his majesty.    --Clarendon.

   4. To discourse; to make mention; to tell.

            Lycan speaks of a part of C[ae]sar's army that came
            to him from the Leman Lake.           --Addison.

   5. To give sound; to sound.

            Make all our trumpets speak.          --Shak.

   6. To convey sentiments, ideas, or intelligence as if by
      utterance; as, features that speak of self-will.

            Thine eye begins to speak.            --Shak.

   {To speak of}, to take account of, to make mention of.
      --Robynson (More's Utopia).

   {To speak out}, to speak loudly and distinctly; also, to
      speak unreservedly.

   {To speak well for}, to commend; to be favorable to.

   {To speak with}, to converse with. ``Would you speak with
      me?'' --Shak.

   Syn: To say; tell; talk; converse; discourse; articulate;
        pronounce; utter.

Speak \Speak\, v. t.
   1. To utter with the mouth; to pronounce; to utter
      articulately, as human beings.

            They sat down with him upn ground seven days and
            seven nights, and none spake a word unto him. --Job.
                                                  ii. 13.

   2. To utter in a word or words; to say; to tell; to declare
      orally; as, to speak the truth; to speak sense.

   3. To declare; to proclaim; to publish; to make known; to
      exhibit; to express in any way.

            It is my father;s muste To speak your deeds. --Shak.

            Speaking a still good morrow with her eyes.
                                                  --Tennyson.

            And for the heaven's wide circuit, let it speak The
            maker's high magnificence.            --Milton.

            Report speaks you a bonny monk.       --Sir W.
                                                  Scott.

   4. To talk or converse in; to utter or pronounce, as in
      conversation; as, to speak Latin.

            And French she spake full fair and fetisely.
                                                  --Chaucer.

   5. To address; to accost; to speak to.

            [He will] thee in hope; he will speak thee fair.
                                                  --Ecclus.
                                                  xiii. 6.

            each village senior paused to scan And speak the
            lovely caravan.                       --Emerson.

   {To speak a ship} (Naut.), to hail and speak to her captain
      or commander.

Source : WordNet®

speak
     v 1: express in speech; "She talks a lot of nonsense"; "This
          depressed patient does not verbalize" [syn: {talk}, {utter},
           {mouth}, {verbalize}, {verbalise}]
     2: exchange thoughts; talk with; "We often talk business";
        "Actions talk louder than words" [syn: {talk}]
     3: use language; "the baby talks already"; "the prisoner won't
        speak"; "they speak a strange dialect" [syn: {talk}]
     4: give a speech to; "The chairman addressed the board of
        trustees" [syn: {address}]
     5: make a characteristic or natural sound; "The drums spoke"
     [also: {spoken}, {spoke}]