1. noun /ˈsteɪ.bəl/
a) A building, wing or dependency set apart and adapted for lodging and feeding (and training) animals with hoofs, especially horses
b) all the racehorses of a particular stable, i.e. belonging to a given owner.
2. verb /ˈsteɪ.bəl/
a) to put or keep (horse) in a stable.
b) to park (a rail vehicle)
See Also: stabled, stabler, stable-boy, stable-hand
3. adjective /ˈsteɪ.bəl/
Relatively unchanging, permanent; firmly fixed or established, not easily to be moved, changed, unbalanced, destroyed or altered in value.
He was in a stable relationship.
Wikipedia foundation.