bruit de frolement

bru·it de frole·ment

a rough, rustling sound made by a pleural or pericardial friction rub.
[Fr. rustling]

bruit de frôlement

A retired French medical lexical import for a rustling sound due to pericardial or pleural friction, which is heard by auscultation; it is covered by “friction rub” in the working medical parlance.