A moat is a bulwark against intruders.
i need a bulwark in this unpleasent situation. =]
He regards the church as being the pillar and bulwark of the truth.
Their religious belief served as a bulwark against loss of hope.
The English Channel has historically been a bulwark of England's defense.
During the collision the water tight doors and bulwark did their jobs and although there was some light flooding the ship did not sink.
The Bulwark was created in 1946.
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
Bulwark Protective Apparel was created in 1990.
There are many online places to find Bulwark clothing. Amazon, bulwark, workingperson, flameresistanceuniforms, and yahoo are just a few who carry this brand.
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.