influenced by Old Norse rudda "club"). Measurement of area or length Rood is an Old English unit of area, equal to one quarter of an acre (i.e., 0.25|acre|ha|1|disp=/|lk=on), or 10890|sqft|m2|7|lk=on|disp=or (for the international inch ) or about 10.1 are . A rectangular area with edges of one furlong and one rod