A normal or abnormal noise arising from within the body: There are various types of auscultatory sounds that may come from within a person's body.

A "rale" is the intermittent crackling or bubbling sound produced by fluid in the air passages and air sacs of the lungs.

A "murmur" is a soft blowing or fluttering sound.

A "bruit" is a significant sound heard inside the body caused by turbulent blood flow within the heart or blood vessels.

A "fremitus" is a vibration or tremor resulting from a physical action, such as speaking or coughing, and felt by a hand and is also used to assess whether the chest is affected by a disease.

There are, of course, other sounds heard during auscultation examinations of the chest or abdomen.