Stabilator

A stabilator (stabilizer-elevator, also all moving tailplane or all flying tail) is an aircraft control surface that combines the functions of an elevator and a horizontal stabilizer. Most fixed-wing aircraft control pitch using a hinged horizontal flap — the elevator — attached to the back of the fixed horizontal stabilizer, but some aircraft make the entire stabilizer movable.

Read more about Stabilator:  General Aviation, Military, Airliners