n. (physics) the force of attraction between all masses in the universe; especially the attraction of the earth's mass for bodies near its surface; "the more remote the body the less the gravity"; "the gravitation between two bodies is proportional to the product of their masses and inversely proportional to the square of the distance between them"; "gravitation cannot be held responsible for people falling in love"--Albert Einstein

n. (physics) the influence that produces a change in a physical quantity; "force equals mass times acceleration"

n. the force used in pulling; "the pull of the moon"; "the pull of the current"