From The Collaborative International Dictionary of English v.0.48:
Eld \Eld\, v. i. To age; to grow old. [Obs.] [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Eld \Eld\, v. t. To make old or ancient. [Obs.] [1913 Webster]
Time, that eldeth all things. --Rom. of R. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Eld \Eld\ ([e^]ld), a. [AS. eald.] Old. [Obs.] --Chaucer. [1913 Webster]
From The Collaborative International Dictionary of English v.0.48:
Eld \Eld\, n. [AS. yldu, yldo, eldo, old age, fr. ald, eald, old. See Old.] 1. Age; esp., old age. [Obs. or Archaic] [1913 Webster]
As sooth is said, eelde hath great avantage. --Chaucer. [1913 Webster]
Great Nature, ever young, yet full of eld. --Spenser. [1913 Webster]
2. Old times; former days; antiquity. [Poetic] [1913 Webster]
Astrologers and men of eld. --Longfellow. [1913 Webster]