Source : Webster's Revised Unabridged Dictionary (1913)

Yea \Yea\, n.
   An affirmative vote; one who votes in the affirmative; as, a
   vote by yeas and nays.

   Note: In the Scriptures, yea is used as a sign of certainty
         or stability. ``All the promises of God in him are yea,
         and in him Amen.'' --2 Cor. i. 20.

Yea \Yea\ (y[=a] or y[=e]; 277), adv. [OE. ye, ya, [yogh]e,
   [yogh]a, AS. ge['a]; akin to OFries. g[=e], i[=e], OS., D.,
   OHG., G., Dan. & Sw. ja, Icel, j[=a], Goth. ja, jai, and
   probably to Gr. "h^ truly, verily. [root]188. Cf. {Yes}.]
   1. Yes; ay; a word expressing assent, or an affirmative, or
      an affirmative answer to a question, now superseded by
      yes. See {Yes}.

            Let your communication be yea, yea; nay, nay.
                                                  --Matt. v. 37.

   2. More than this; not only so, but; -- used to mark the
      addition of a more specific or more emphatic clause. Cf.
      {Nay}, adv., 2.

            I therein do rejoice, yea, and will rejoice. --Phil.
                                                  i. 18.

   Note: Yea sometimes introduces a clause, with the sense of
         indeed, verily, truly. ``Yea, hath God said, Ye shall
         not eat of every tree of the garden?'' --Gen. iii. 1.

Source : WordNet®

yea
     n : an affirmative; "The yeas have it" [ant: {nay}]
     adv : not only so, but; "I therein do rejoice, yea, and will
           rejoice" [syn: {yeah}]