Eldest /(?)/

Eld·est

Eldest

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.
    Their eldest historians are of suspected credit.
    — Bp. Stillingfleet.

Phrases & Compounds
Eldest hand
the player on the dealer's left hand.