Australian and New Zealand slang for a foolish or stupid person; also a type of seabird found in warm waters.
The slang usage likely derives from the bird name, as 'drongo' as a seabird comes from the Spanish 'drongo' or Portuguese origins. The Australian slang application emerged in the 20th century, possibly from the bird's appearance or behavior.
Australian slang is beautifully creative—calling someone a 'drongo' works because the actual drongo bird has a slightly goofy, long-forked tail that makes it look a bit silly, so the insult just fits!
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