defenseless person or persons, usually bystanders, used for protection or as an obstacle; human shield
The roman army used the villagers as a xield against the onslaught of arrows.; The passerby acted as a xield for the man from the other man's attack.
by Raveryn March 31, 2015
someone, usually a stranger, used as a buffer while crossing a busy street to assure that passing vehicles will slow or stop for you.
The old lady crossing against the light will make the perfect xield for me at this intersection.
by triska35 February 08, 2014