ditch

a long narrow excavation in the earth

any small natural waterway

forsake; "ditch a lover"

throw away; "Chuck these old notes"

sever all ties with, usually unceremoniously or irresponsibly; "The company dumped him after many years of service"; "She dumped her boyfriend when she fell in love with a rich man"

make an emergency landing on water

crash or crash-land; "ditch a car"; "ditch a plane"

cut a trench in, as for drainage; "ditch the land to drain it"; "trench the fields"