roundelay

Etymology

From Middle French rondelet, diminutive of Old French rondel (French: rondeau). Ending -lay either from lay (“ballad or sung poem”), or from virelay.

noun

1. (music) A poem or song having a line or phrase repeated at regular intervals.
   When merry milkmaids click the latch And rarely smells the new-mown hay, And the cock hath sung beneath the thatch Twice or thrice his roundelay, Twice or thrice his roundelay; Alone and warming his five wits, The white owl in the belfry sits. 1830, Alfred Lord Tennyson, Poems, Chiefly Lyrical, Song - The Owl
   For then the little birds do sing their sweetest song, all joining in one joyous medley, whereof one may scarce tell one note from another, so multitudinous is that pretty roundelay;[…] 1903, Howard Pyle, “Chapter First”, in The Story of King Arthur and His Knights, Part II, page 61
2. A dance in a circle.
3. Anything having a round form; a roundel.