also: ふいん
noun
report of a death; news of someone's passing
A formal, somewhat literary term for a death notice or obituary. In modern Japanese, 訃報 (ふほう) is far more common.
新聞で旧友の訃音に接した。
I learned of my old friend's passing through the newspaper.
訃音欄に彼の名を見つけて驚いた。
I was shocked to find his name in the obituary column.
訃報 is the standard modern word for a death notice or obituary. 訃音 is a rarer, more literary synonym.
Compound of 訃 (obituary, news of death) and 音 (sound, news). The exact historical derivation is uncertain, but it follows a classical pattern of using 音 to mean 'tidings' or 'report'.