jug-jug

The garden was a very Eden, with running water amongst its lawns, with flowers and the lament of doves and the jug-jug of nightingales.

The Brown Fairy Book 2003

First of all he gave a clever imitation of the notes of all birds, ending up with the prolonged 'jug-jug' of the nightingale, which he did to such perfection that you could hardly believe there was not a grove full of those birds on the stage.

Chatterbox, 1905. Various

His song was very similar to the English nightingale, extremely liquid and melodious, with the same "jug-jug," but more powerful and sustained.

Wild Nature Won By Kindness Elizabeth Brightwen

On opening the lid, an enamelled bird started up, sat on the rim, turned round, fluttered its wings, and piped in a delightful tone the notes of different birds; particularly the jug-jug of the nightingale.

The Letters of Horace Walpole, Earl of Orford — Volume 4 Horace Walpole 1757

Don't fuget to shell dem peas, geh de goat de husk, and put dem peas away to mek jug-jug.

Barbados Underground 2009

Don't fuget to shell dem peas, geh de goat de husk, and put dem peas away to mek jug-jug.

unknown title 2009

a very Eden, with running water amongst its lawns, with flowers and the lament of doves and the jug-jug of nightingales.

The Brown Fairy Book Andrew Lang 1878