What is "thrust plane"

Thrust \Thrust\, n.

1. A violent push or driving, as with a pointed weapon moved in the direction of its length, or with the hand or foot, or with any instrument; a stab; -- a word much used as a term of fencing.

   [Polites] Pyrrhus with his lance pursues, And often reaches, and his thrusts renews.
   --Dryden.

2. An attack; an assault.

   One thrust at your pure, pretended mechanism.
   --Dr. H. More.

3. (Mech.) The force or pressure of one part of a construction against other parts; especially (Arch.), a horizontal or diagonal outward pressure, as of an arch against its abutments, or of rafters against the wall which support them.

4. (Mining) The breaking down of the roof of a gallery under its superincumbent weight.

   Thrust bearing (Screw Steamers), a bearing arranged to receive the thrust or endwise pressure of the screw shaft.

   Thrust plane (Geol.), the surface along which dislocation has taken place in the case of a reversed fault.

   Syn: Push; shove; assault; attack.

   Usage: Thrust, Push, Shove. Push and shove usually imply the application of force by a body already in contact with the body to be impelled. Thrust, often, but not always, implies the impulse or application of force by a body which is in motion before it reaches the body to be impelled.