Definitions of stable:

• noun:   a farm building for housing horses or other livestock
• verb:   shelter in a stable

  Example: "Stable horses"

• adjective:   not taking part readily in chemical change
• adjective:   firm and dependable; subject to little fluctuation

  Example: "The economy is stable"

• adjective:   resistant to change of position or condition

  Example: "A stable ladder"

• adjective:   maintaining equilibrium
• adjective:   showing little if any change
• name:  A surname (very rare: popularity rank in the U.S.: #77805)