Synecdoche (from Greek, meaning literally simultaneous understanding) is a figure of speech in which one of the following occurs:
- A part of something is used for the whole (e.g., hands for sailors, Ol’ Blue Eyes for Frank Sinatra).
- A whole is used for a part (e.g., the law for police).
- A specific is thing is used for a general thing (e.g., John Hancock for signature, Coke for all colas, Wall Street for the financial industry).
- A non-specific term is used for a specific thing (e.g., the good book for The Bible).
- A material is used for the object made of that material (e.g., plastic for credit card).
- A container is used for its contents (e.g., flask for liquor).