Real Dictionary

dump
verb: If something is dumped somewhere, it is put or left there because it is no longer wanted or needed.
verb: If you dump something somewhere, you put it or unload it there quickly and carelessly.

dump in American English
intransitive verb: to fall or drop down suddenly
transitive verb: to drop or let fall in a mass; fling down or drop heavily or suddenly

dump in American English 1
a rubbish pile
to fall in a heap or mass
to throw down or out roughly; empty out or unload as in a heap or mass

dump in American English 2
a sad tune or song

dump in British English 1
noun: a place or area where waste materials are dumped
verb: to drop, fall, or let fall heavily or in a mass

dump in British English 2
noun: a mournful song; lament