a person or thing that protects
A brilliant lawyer and public speaker, he is widely recognized as a bulwark of the Dalit rights movement.
Bulwark: Bull war k time strong wall banana chahiye, taki ko usse par kar public par na aajay. BULL + WORK--BULLs were carrying bricks for the WORK of a wall construction. Nandi (Bull of Shiva), protects shiv's place from demons. BULl+shiVA (WA)+RKsha