What is the meaning of Rondel?

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.

The verse form rondeau.

A rondelle, (small) circular object.

A long thin medieval dagger with a circular guard and a circular pommel (hence the name).

A small round tower erected at the foot of a bastion.

circular or round object

rondel; type of poem

pan, saucepan (deep cooking vessel with a handle and sometimes a lid; used for boiling, stewing and making sauces)

barbican (tower at the entrance to a castle or fortified town)

rondel

rondel (poem)

Source: wiktionary.org