Definition of "tonk"

It has big deep-down chairs and a card table by the window covered with jade, dracena and doctor plants until they want to have card games or play tonk between themselves.

1992, Toni Morrison, Jazz, Vintage (2016), page 13

In one of those stampings into the yard he suddenly rushed at the tank and tapped it. Tonk, tonk, tonk, tab. One rung left. Only one rung; about a week's supply of water.

1938, Norman Lindsay, Age of Consent, 1st Australian edition, Sydney, N.S.W.: Ure Smith, published 1962, page 153

Then your dad would step up and spend 45 minutes repeatedly tonking the ball over the shower block […]

2012, Iain Macintosh, Everything You Ever Wanted to Know About Cricket But Were Too Afraid to Ask

Moments later, Sehwag tonked the ball and it travelled some distance.

2014, Makarand Waingankar, Guts & Glory