Dictionary

An illegal immigrant of any country.

Example: 1990: United States. Congress. Senate. Committee on the Judiciary, Confirmation Hearings on Federal Appointments: Hearings Before the Committee - An agent, Larry Moy, when asked to define the derivation of the term “tonk,” replied: “...it's the sound of flashlight hitting somebody's head, tonk". [This "derivation" is incorrect - see Etymology]

An item of value, or of perceived value, especially for sale.

Example: How much tonk have we got to shift?

A matching card game, combining features of knock rummy and conquian.

A tank.

To knock or strike (a ball) so that it flies through the air.