A stubby or stubbie is a 375 ml glass container holding beer. Universally recognised throughout Australia. I believe the name comes from its shape which does indeed remind you of a stubby tallie. If that makes sense.

Note: I'm probably wrong about the origins of the name

Stub"by (?), a.

1.

Abounding with stubs.

2.

Short and thick; short and strong, as bristles.

 

© Webster 1913.