Anvil sound

From Biology-Online Dictionary | Biology-Online Dictionary

Anvil sound --> bellmetal resonance

in cases of a large pulmonary cavity or of pneumothorax, a clear metallic sound obtained by striking a coin, held against the chest, by another coin, or by flicking the chest wall with one's fingernail; the sound is heard on auscultating the chest wall on the same side anteroposteriorly.

Synonym: anvil sound, bell sound, coin test.