chain letter
noun
a letter sent to a number of people, each of whom is asked to make and mail copies to other people who are to do likewise, often used as a means of spreading a message or raising money.
Origin of chain letter
First recorded in 1905–10
Words nearby chain letter
chain drive,
chain fern,
chain gang,
chain gear,
chain grate,
chain letter,
chain lightning,
chain locker,
chain mail,
chain measure,
chain of command
British Dictionary definitions for chain letter
chain letter
noun
a letter, often with a request for and promise of money, that is sent to many people who add to or recopy it and send it on to others: illegal in many countries