| the last act or manifestation of someone or something; farewell appearance: This building turned out to be the swan song of Victorian architecture. |

| swan song n.
[From the belief that the swan sings as it dies.] |
swan song
A final accomplishment or performance, one's last work. For example, I'm resigning tomorrow; this project was my swan song. This term alludes to the old belief that swans normally are mute but burst into beautiful song moments before they die. Although the idea is much older, the term was first recorded in English only in 1890.