noun

a narrow channel dug at the side of a road or field, to hold or carry away water.

their car went out of control and plunged into a ditch

trench,trough,channel,dyke,drain,gutter,gully,moat,duct,watercourse,conduit,ha-ha,fosse,sap,fleet

verb

provide with a ditch or ditches.

he was praised for ditching the coastal areas

dig a ditch in,provide with ditches,trench,excavate,drain