[1] : The Collaborative International Dictionary of English v.0.48

eldest \eld"est\, a. as. yldest, superl. of eald old. see
   elder, a.
   1. oldest; longest in duration. --shak.
      1913 webster

   2. born or living first, or before the others, as a son,
      daughter, brother, etc.; first in origin. see elder. "my
      lady's eldest son." --shak.
      1913 webster

            their eldest historians are of suspected credit.
                                                  --bp.
                                                  stillingfleet.
      1913 webster

   eldest hand card playing, the player on the dealer's left
      hand. --r. a. proctor.
      1913 webster
see also:
elder eldest hand 

[2] : WordNet (r) 2.0

eldest
     adj : first in order of birth; "the firstborn child" syn: firstborn
     n : the offspring who came first in the order of birth syn: firstborn
see also:
firstborn 

Eldest >> E Words
Eldest, definition of term: Eldest
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