chuck, ditch -- (throw away; "Chuck these old notes")
dump, ditch -- (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")
ditch -- (make an emergency landing on water)
ditch -- (crash or crash-land; "ditch a car"; "ditch a plane")
trench, ditch -- (cut a trench in, as for drainage; "ditch the land to drain it"; "trench the fields")