Source : Webster's Revised Unabridged Dictionary (1913)

Birth \Birth\ (b[~e]rth), n. [OE. burth, birth, AS. beor[edt],
   gebyrd, fr. beran to bear, bring forth; akin to D. geboorte,
   OHG. burt, giburt, G. geburt, Icel. bur[eth]r, Skr. bhrti
   bearing, supporting; cf. Ir. & Gael. beirthe born, brought
   forth. [root]92. See 1st {Bear}, and cf. {Berth}.]
   1. The act or fact of coming into life, or of being born; --
      generally applied to human beings; as, the birth of a son.

   2. Lineage; extraction; descent; sometimes, high birth; noble
      extraction.

            Elected without reference to birth, but solely for
            qualifications.                       --Prescott.

   3. The condition to which a person is born; natural state or
      position; inherited disposition or tendency.

            A foe by birth to Troy's unhappy name. --Dryden.

   4. The act of bringing forth; as, she had two children at a
      birth. ``At her next birth.'' --Milton.

   5. That which is born; that which is produced, whether animal
      or vegetable.

            Poets are far rarer births than kings. --B. Jonson.

            Others hatch their eggs and tend the birth till it
            is able to shift for itself.          --Addison.

   6. Origin; beginning; as, the birth of an empire.

   {New birth} (Theol.), regeneration, or the commencement of a
      religious life.

   Syn: Parentage; extraction; lineage; race; family.

Birth \Birth\, n.
   See {Berth}. [Obs.] --De Foe.

Source : WordNet®

birth
     n 1: the time when something begins (especially life); "they
          divorced after the birth of the child"; "his election
          signaled the birth of a new age" [ant: {death}]
     2: the event of being born; "they celebrated the birth of their
        first child" [syn: {nativity}, {nascency}, {nascence}]
        [ant: {death}]
     3: the process of giving birth [syn: {parturition}, {giving
        birth}, {birthing}]
     4: the kinship relation of an offspring to the parents [syn: {parentage}]

birth
     v : give birth (to a newborn); "My wife had twins yesterday!"
         [syn: {give birth}, {deliver}, {bear}, {have}]