A coin worth one half of a dollar, typically 50 cents.

(now historical) A silver coin and money of account in use from the late-16ᵗʰ to the mid-19ᵗʰ centuries in the European Teutonic countries and their imperial trading networks.

The official currency of the United States.

The symbol $, used to indicate a price in dollars.

(US) Americanized form of in for a penny, in for a pound.

(chiefly US, idiomatic) The maximum amount of money that an item, service, or worker is worth; a very high price.

A US dollar coin featuring a portrait of Sacagawea.

The last of one's money; all of one's money.

(US) A dollar coin, whether made from silver or not. / (US) A small pancake.

Any echinoderm of the order Clypeasteroida, having a flat, disk-shaped body with the mouth in a mid-ventral position, and living in sand, on or near the surface.