Thrust

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.
2. An attack; an assault.
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.