A historical British silver coin worth four pence, used from the 14th to the 19th century. The groat was a common coin in medieval England, often used in everyday transactions.
A hulled grain, especially oats, that is used as food. For breakfast, she prepared a hearty bowl of groats with milk and honey.
A very small amount of money; something of negligible value (chiefly in negative expressions). I don't care a groat for his empty promises.