levelling (Noun) — Changing the ground level to a smooth horizontal or gently sloping surface.
levelling (Noun) — Complete destruction of a building.
levelling (Noun) — The act of making equal or uniform.
levelling (Verb) — Aim at. ex. "level criticism or charges at somebody"
levelling (Verb) — Tear down so as to make flat with the ground. ex. "When a force occupies an enemy fortress, it may level the fortifications"
levelling (Verb) — Make level or straight. ex. "level the ground"
levelling (Verb) — Direct into a position for use. ex. "It is important to look through the scope for some vertical or horizontal reference and to consciously level your gun"
levelling (Verb) — Talk frankly with; lay it on the line. ex. "I have to level with you"
levelling (Verb) — Become level or even.