v. 1 intr. & tr. move or cause to move continuously and rapidly to and fro; oscillate. 2 intr. Physics move unceasingly to and fro, esp. rapidly. 3 intr. (of a sound) throb; continue to be heard. 4 intr. (foll. by with) quiver, thrill (vibrating with passion). 5 intr. (of a pendulum) swing to and fro. vibrative adj.
[ L vibrare vibrat- shake, swing ]