Thrist. of Thrust To push or drive with force; to drive, force, or impel; to shove; as, to thrust anything with the hand or foot, or with an instrument. To stab; to pierce; -- usually with through. To make a push; to attack with a pointed weapon; as, a fencer thrusts at his antagonist. To enter by pushing; to squeeze in. To push forward; to come with force; to press on; to intrude. 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. An attack; an assault. 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. The breaking down of the roof of a gallery under its superincumbent weight.