noun
a person or thing that stabilizes; specif.,
- any of the fixed airfoils or vanes that keep an airplane steady in flight, as the components of the tail section
- a device used to steady a ship in rough waters, esp. a gyrostabilizer; also, a gyroscope used to keep instruments on a ship, aircraft, etc. in a steady position
- any additive used in substances and compounds to keep them stable, retard deterioration, etc.