el·dest /ˈɛldəst/
 (a.)最年長的;年事最高的
 Eld·est a.
 1. Oldest; longest in duration.
 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.”
    Their eldest historians are of suspected credit.   --Bp. Stillingfleet.
 Eldest hand Card Playing, the player on the dealer's left hand.
 ◄ ►
 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]