gravity
grav.i.ty \'grav-*t-e-\ n [MF or L; MF gravite`, fr. L. gravitat-, gravitas, fr. gr]avis 1a: dignity or sobriety of bearing 1b: IMPORTANCE, SIGNIFICANCE; esp : SERIOUSNESS 2: PONDERABILITY 3: WEIGHT - used chiefly in the phrase center of gravity 4a: the gravitational attraction of the earth's mass for bodies at or near its surface; broadly : GRAVITATION 4b: ACCELERATION OF GRAVITY 4c: SPECIFIC GRAVITY - gravity aj