Poem with only two rhymes throughout (7)

I believe the answer is:

rondeau

(Other definitions for rondeau that I've seen before include "Form of verse by Swinburne" , "Musical composition; poem of 13/15 lines" , "Short lyrical poem" , "Short poem with only two rhymes and opening words used twice as refrain" , "form of music" .)

I've seen this clue in The Guardian.

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