To catch off guard; to take by surprise.
To attack (a person) on his or her blind side.
The blindside flanker, a position in rugby union, usually number 6.
A person's weak point.
A tram/train driver's field of blindness around a tram (trolley/streetcar) or a train; the side areas behind the tram/train driver.
The space on the side of the pitch with the shorter distance between the breakdown/set piece and the touchline; compare openside.
A driver's field of blindness around an automobile; the side areas behind the driver.
to occur to someone when unexpected; to surprise