The Bulwark was created in 1946.
A moat is a bulwark against intruders.
Bulwark is a noun when referred to a wall used as a fortification. It is a verb as in to defend or fortify as if with a bulwark
i need a bulwark in this unpleasent situation. =]
Bulwark Protective Apparel was created in 1990.
He regards the church as being the pillar and bulwark of the truth.
Their religious belief served as a bulwark against loss of hope.
There are many online places to find Bulwark clothing. Amazon, bulwark, workingperson, flameresistanceuniforms, and yahoo are just a few who carry this brand.
The English Channel has historically been a bulwark of England's defense.
A bulwark is a supporting structure, parapet, or the above-deck hull of a ship (mainly to reduce over-wash). Metaphorically, it is a defense; a support or protective barrier, as in "the price controls were a bulwark against rampant inflation."
Not sure about Bulwark Road, but there is an excellent website about the History of Helston on the link below.
If you take bulwark to mean fortification, support then antonyms would be weak point, weak link, weakness, defenseless or exposed.