ditch

Sever all ties with, usually unceremoniously or irresponsibly.

Cut a trench in, as for drainage.

“ditch the land to drain it”

Throw away.

Crash or crash-land.

“ditch a car”

“ditch a plane”

Forsake.

“ditch a lover”

Make an emergency landing on water.

A long narrow excavation in the earth.

Any small natural waterway.