dunch

To knock against; to hit, punch

To crash into; to bump into.

To gore with the horns, as a bull.

To push, jog, or nudge, especially with the elbow.

A push; knock; bump.

And just at the same time the tide caught the brig, and threw the wind out of her sails. She came round into the wind like a top, and the next moment struck the reef with such a dunch as threw us all flat upon the deck, and came near to shake Mr. Riach from his place upon the mast.

A fat hit from a claggy lie.

A leisurely meal between lunch and dinner in the late afternoon or early evening (about 3-5 p.m.), usually instead of lunch or dinner.

I have a lunchtime meeting tomorrow, so let's have dunch together instead.