bulwark
noun
a wall of earth or other material built for defense; rampart.
Used to express actions, events, or states that have not yet occurred but are expected to happen.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Lawmakers in South Carolina, Wisconsin and West Virginia have floated similar measures, which in turn will bulwark support for federal legislation.
From US News ● Jan. 19, 2015