cock-a-doodle-doo UK /ˌkʰɒkəˌduːdɫ̩ˈduː/US /ˌkɑkəˌdudəlˈdu/exclamation 1noun 1forms 1 exclamation1 •The cry of a rooster.Hark, hark, I heare, the straine of strutting Chanticlere cry cockadidle-dowe. — 1610 noun1 •The cry of the rooster. formscock-a-doodle-doos