n. A metric form of verse using two rhymes, usually fourteen 8- to 10-syllable lines in three stanzas, with the first lines of the first stanza returning as refrain of the next two.n. A poem in the above form.n. The verse form rondeau.n. A poem in the above rondeau form.n. A rondelle, (small) circular object.n. A long thin medieval dagger with a circular guard and a circular pommel (hence the name).n. A small round tower erected at the foot of a bastion.