[en-voi, ahn-] 
| a short stanza concluding a poem in certain archaic metrical forms, as a ballade, and serving as a dedication, or a similar postscript to a prose composition. |
| en·voi (ěn'voi', ŏn'-) n. Variant of envoy2. |
| en·voy 2 also en·voi (ěn'voi', ŏn'-) n.
[Middle English envoie, from Old French, a sending away, conclusion, from envoier, to send; see envoy1.] |
envoi
the usually explanatory or commendatory concluding remarks to a poem, essay, or book. The term is specifically used to mean a short, fixed final stanza of a poem (such as a ballade) pointing the moral and usually addressing the person to whom the poem is written. Although they are most often associated with the ballade and chant royal-i.e., French poetic forms-envois have also been used by several English poets, including Geoffrey Chaucer, Robert Southey, and Algernon Charles Swinburne. The word is from the Middle French envoy, literally, "the act of sending or dispatching."
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vɔɪ