What is the meaning of Bluey?

Having a colour similar to blue.

The metal lead.

A bushman's blanket.

A collection of clothes and other belongings rolled up into a bundle for carrying; a swag.

A blue cattle dog, especially a blue heeler.

A blue singlet, especially one from the Bonds clothing label.

A bluebottle.

A disposable underpad.

A blue film.

A person with ginger hair.

An online troll who uses the blue check verification system on Twitter.

Synonym of blue pill (pill of Viagra).

Source: wiktionary.org