Vibration

• an involuntary vibration (as if from illness or fear)

• a small earthquake

• shaking or trembling (usually resulting from weakness or stress or disease)

• shake with seismic vibrations

• a tremulous sound

• a musical note having the time value of an eighth of a whole note

• give off unsteady sounds, alternating in amplitude or frequency

• sing or play with trills, alternating with the half note above or below

• the act of moving back and forth

• abnormally rapid beating of the auricles of the heart (especially in a regular rhythm); can result in heart block

• a disorderly outburst or tumult

• the motion made by flapping up and down

• move along rapidly and lightly; skim or dart

• move back and forth very rapidly

• flap the wings rapidly or fly with flapping movements

• beat rapidly

• wink briefly