WordNet Dictionary- [n] the offspring who came first in the order of birth
- [adj] first in order of birth; "the firstborn child"
Webster's 1913 Dictionary\Eld"est\, a. [AS. yldest, superl. of eald old. See
{Elder}, a.]
1. Oldest; longest in duration. --Shak.
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.
Their eldest historians are of suspected credit.
--Bp.
Stillingfleet.
{Eldest hand} (Card Playing), the player on the dealer's left
hand. --R. A. Proctor.