A final shot in a match at archery; chiefly figurative, a closing or parting shot. Obsolete.

With possessive, esp. possessive pronoun, or (somewhat rare) the. The final thing a person or thing does or can do; a final performance of a…

A song like that traditionally believed to be sung by a swan that is about to die; the last work of a musician, poet, writer, etc., typically…

In extended use. A concluding word, act, event, etc.; a conclusion, finale. Cf. culorum, n.

the final campaign or initiative in a politician's career; (hence) any final performance or effort, a swansong.