Cosh is a noun that refers to a thick heavy stick or bar used as a weapon. It’s also a verb that means to hit someone over the head with a cosh.

Our word of the day’s origin is unknown, but we know it’s been around since the 19th century. Here’s an example of cosh in use:

When walking in the woods, I usually carry a large, wooden cosh with me just in case I run into Bigfoot or something like that. I know it’s an unlikely thing to happen, but if it does I’ll be ready to strike that behemoth on the head in my defence.