expression, godan verb (-u)
cover a coffin; die
Idiomatic expression meaning 'to die', literally 'to cover a coffin'. Used in formal or literary contexts.
彼はついに棺を覆うことになった。
He finally passed away.
Common verb for 'to die'; 棺を覆う is a formal, literary euphemism.
From the literal action of covering a coffin, used metaphorically to mean 'to die'.