Definition of "coda"

Downstairs, a little later, in the drawing room, the coda of the party was unwinding, and Gerald opening new bottles of champagne as though he made no distinction between the boring drunks who "sat," and the knowing few of the inner circle, gathered round the empty marble fireplace.

2004, Alan Hollinghurst, chapter 9, in The Line of Beauty […], 1st US edition, New York, N.Y.: Bloomsbury Publishing

In gray stormy light, their painted eyes stare out at the Mediterranean—at Homer’s wine-dark sea, at a corridor into modernity. But in memory my walk’s true coda in the Middle East came earlier.

2014, Paul Salopek, Blessed. Cursed. Claimed., National Geographic (December 2014)

Redundancies accounted for a smaller proportion of the change, although no less significant to those affected. Rail News, BR's staff magazine, included a coda to its August 1964 assessment of the Beeching cuts: "For the individuals involved it is a worrying time [...] Rail News feels deeply for those affected and expresses the sympathy of its readers with them."

2023 March 22, Mike Esbester, “Staff, the public and industry will suffer”, in RAIL, number 979, page 39