Source : Webster's Revised Unabridged Dictionary (1913)

Eld \Eld\, v. t.
   To make old or ancient. [Obs.]

         Time, that eldeth all things.            --Rom. of R.

Eld \Eld\, v. i.
   To age; to grow old. [Obs.]

Eld \Eld\, a. [AS. eald.]
   Old. [Obs.] --Chaucer.

Eld \Eld\, n. [AS. yldu, yldo, eldo, old age, fr. ald, eald,
   old. See {Old}.]
   1. Age; esp., old age. [Obs. or Archaic]

            As sooth is said, eelde hath great avantage.
                                                  --Chaucer.

            Great Nature, ever young, yet full of eld.
                                                  --Spenser.

   2. Old times; former days; antiquity. [Poetic]

            Astrologers and men of eld.           --Longfellow.

Source : WordNet®

eld
     n 1: a late time of life; "old age is not for sissies"; "he's
          showing his years"; "age hasn't slowed him down at all";
          "a beard white with eld"; "on the brink of geezerhood"
          [syn: {old age}, {years}, {age}, {geezerhood}]
     2: a time in life (usually defined in years) at which some
        particular qualification or power arises; "she was now of
        school age"; "tall for his eld" [syn: {age}]