What is the meaning of Gallus?

plural of gallu

a cock, rooster, cockerel

a Gaul, an inhabitant of Gaul

a Galatian

Gallic

Galatian

one of the priests of Cybele in Phrygia and Rome who wore feminine clothes and typically castrated themselves

daring; confident; cheeky.

fit to be hanged; wicked; mischievous

Source: wiktionary.org