Source : Webster's Revised Unabridged Dictionary (1913)

Sometime \Some"time`\, adv.
   1. At a past time indefinitely referred to; once; formerly.

            Did they not sometime cry ``All hail'' to me?
                                                  --Shak.

   2. At a time undefined; once in a while; now and then;
      sometimes.

            Sometime we see a cloud that's dragonish, A vapor
            sometime like a bear or lion.         --Shak.

   3. At one time or other hereafter; as, I will do it sometime.
      ``Sometime he reckon shall.'' --Chaucer.

Sometime \Some"time`\, a.
   Having been formerly; former; late; whilom.

         Our sometime sister, now our queen.      --Shak.

         Ion, our sometime darling, whom we prized. --Talfourd.

Source : WordNet®

sometime
     adj : belonging to some prior time; "erstwhile friend"; "our
           former glory"; "the once capital of the state"; "her
           quondam lover" [syn: {erstwhile(a)}, {former(a)}, {once(a)},
            {onetime(a)}, {quondam(a)}, {sometime(a)}]
     adv : at some indefinite or unstated time; "let's get together
           sometime"; "everything has to end sometime"; "It was to
           be printed sometime later"