Selion
A selion is a medieval open strip of land or a small field used for growing crops, usually owned by or rented to peasants. A selion of land was typically one furlong long and one chain wide. However, exact measurements could vary depending on the geography of the land. The area of one furlong by one chain is one acre. Monasteries or similar institutions were often bequeathed selions, derived an income by letting them.A strip of land consisted of one, two or three selions, although Rackham reports that a strip might be "a block of up to forty selions".