A beating, vibration or palpitation.
To pound or beat rapidly or violently.
To pulse (often painfully) in time with the circulation of blood.
To vibrate or pulsate with a steady rhythm.
One who, or that which, trembles.
The vibrating hammer, or spring contact piece of a hammer break, as of the electric ignition apparatus for an internal combustion engine.
Any of various New World passerine birds of the family Mimidae.