Rood (British/American), area
Specifically, rood is an old English unit of area, equal to quarter of an acre, i.e. 10 890 square feet or 1011.7141056 m² (for the international inch) or about 10.1 are. A rectangular area with edges of one furlong and one rod respectively is one rood, as is an area consisting of 40 square rods. Confusingly called an acre in some ancient contexts.