noun, masculine/ku.ku/plural: coucous
cuckoo (the bird); cuckoo (the cry of the bird); cuckoo clock; cowslip (flower); old plane; old crate; rust bucket; any old vehicle, especially one that is rickety
“— Il est encore trop tôt! pensa-t-il en regardant le coucou du perruquier, qui marquait neuf heures.”
Inherited from Old French cucu; onomatopoeic derivative of the call of the cuckoo (bird), coucou, or from Latin cuculus.