Ekus

Etymology
From Proto-Indo-European *ekwos (horse).

It has 3 meanings:
 * Animal, valid for both genders.
 * The knight piece at chess.
 * A person who spends a lot of time working, works very hard or both.

Derived words

 * danekus (n), hippopotamus.
 * disekus (n), cavalry.
 * ekusar (n), horse rider.
 * ekusarom (n), horse riding.
 * ekusdom (n), stable (for any kind of animal).
 * ekusdrom (n), horse racecourse.
 * ekusin (n), colt.
 * ekuskarpi (n), horseshoe.
 * ekusuk (adj), equestrian.
 * morekus (n), sea horse.