underflow

One even reads nice things about the way cassettes sound, as in a Medium post from Aubrey Norwood: “The sound tape gives is warm. Saturated. It promotes a degree of imperfection, and creates an underflow of infamous tape hiss that leaves the format feeling nakedly honest, which is gold dust for the sincere-inclined musician.”

In 1972, under pressure from the state of Illinois, the Environmental Protection Agency, and residents, a group of regional stakeholders adopted the Chicago Underflow Plan—later known as the Tunnel and Reservoir Plan.

Underflow dams were constructed and a boom was installed to ensure that no fuel traveled into a dry creek bed that runs from the pond to Peel Creek, which flows into the Cahaba River.

Adobe only describes the flaw as being an "integer underflow vulnerability" in its report.

Below the track lies an underflow heating system.