make (bells) ring, often for the purposes of musical edification; "Ring the bells"; "My uncle rings every Sunday at the local church"
To sound as a knell; especially, to toll at a death or funeral; hence, to sound as a warning or evil omen
The stroke of a bell tolled at a funeral or at the death of a person; a death signal; a passing bell; hence, figuratively, a warning of, or a sound indicating, the passing away of anything
If you say that something sounds the death knell for a particular person or thing, you mean it will cause that person or thing to fail, end, or cease to exist. The tax increase sounded the death knell for the business. a sign that something will soon fail or stop existing death blow (sound/strike/toll) the death knell for/of sth