A 375 ml can of beer. That's it really not much to say here expect that tinny can also mean a small tin boat used by recreational fisherman. Yes, this is Australian slang.

Also approximatly $20 worth of dope. New Zealand slang. Generally sold at tinny houses, which are often run by gangs, and usually exist in dodgy neighbourhoods. Entry level into the drug food chain, and hence extremely poor value for money.

Tin"ny (?), a.

Pertaining to, abounding with, or resembling, tin.

"The tinny strand."

Drayton.

 

© Webster 1913.