Bulwark

бастио́н

bastión

(defensive wall or rampart)

вал

val

(defensive wall or rampart)

защи́та

zaščíta

(defense or safeguard)

опло́т

oplót

(defense or safeguard)

опо́ра

opóra

(defense or safeguard)

реду́т

redút

(defensive wall or rampart)

фальшбо́рт

falʹšbórt

(nautical: planking or plating along the sides of a nautical vessel above her gunwale)