What is "passing bell"

Passing \Pass"ing\, n. The act of one who, or that which, passes; the act of going by or away.

Passing bell, a tolling of a bell to announce that a soul is passing, or has passed, from its body (formerly done to invoke prayers for the dying); also, a tolling during the passing of a funeral procession to the grave, or during funeral ceremonies.
--Sir W. Scott.
--Longfellow.

alt. (context music English) A bell rung to announce a passing, a death, or funeral; death bell, death knell. n. (context music English) A bell rung to announce a passing, a death, or funeral; death bell, death knell.