1) on the side furthest from the edge of the road; (in football, hockey etc) (of a player) nearer the other team's goal than any player in the other team in a way that is against the rules (off side)
2) a small (usually round) window on the side of a ship or plane (porthole)
extra; added
extra, supplementary
as an added person or thing
in addition; as well
immediately after another or others in order or time
coming immediately after in space, time, order
