groat

Short definition from Wiktionary

Noun

1. 1
   Hulled grain, chiefly hulled oats.
2. 2
   Any of various old coins of England and Scotland.
3. 3
   Any of various old coins of England and Scotland: Any unit of currency worth four pence.
4. 4
   Any of various old coins of England and Scotland: A historical English coin representing such a unit: a silver coin worth four English pennies, still minted as one of the set of Maundy coins.
5. 5
   A proverbial small sum; a whit or jot.

Proper noun

1. 1
   A surname.