> their death nail Just FYI, the phrase is "death knell": https://en.wikipedia.org/wiki/Death_knell https://en.wikipedia.org/wiki/Death_knell This is a common

> their death nail Just FYI, the phrase is "death knell": https://en.wikipedia.org/wiki/Death_knell https://en.wikipedia.org/wiki/Death_knell This is a common 'eggcorn' (https://eggcorns.lascribe.net/english/1130/nail/ https://eggcorns.lascribe.net/english/1130/nail/) because 'knell' is an old-fashioned word virtually unused outside of this one idiomatic phrase.