blindside

1. A driver's field of blindness around an automobile; the side areas behind the driver.
2. A tram/train driver's field of blindness around a tram (trolley/streetcar) or a train; the side areas behind the tram/train driver.
3. A person's weak point. (figuratively)
4. The space on the side of the pitch with the shorter distance between the breakdown/set piece and the touchline; compare openside.
5. The blindside flanker, a position in rugby union, usually number 6. · The blindside packs down at the scrum on the blindside.

الجمع blindsides