צֶמֶד tsemed (H6776)

hence, an acre (i.e. day's task for a yoke of cattle to plough)

1) couple, pair, team, yoke 1a) couple, pair, span (usually of animals) 1b) acre 1b1) the amount of land a span of oxen could plow in one day

a yoke or team (i.e. pair);