One that is considered much like a defensive stronghold: you might be a bastion of energy. See Synonyms at bulwark.
a projecting section of a rampart or any other fortification
a well-fortified position; a stronghold or citadel
an individual, or thing, just who strongly defends some concept
a-work projecting outward from main inclosure of a fortification, consisting of two faces and two flanks, and thus built that it is able to defend by a flanking fire the adjacent curtain, or wall surface which expands from bastion to another. Two adjacent bastions tend to be linked because of the curtain, which joins the flank of one because of the adjacent flank of this various other. The length involving the flanks of a bastion is named the gorge. A lunette is a detached bastion. See ravelin.
In fortification, scores of earth, faced with sods, brick, or rocks, standing from a rampart, of which it really is a principal part.
a stronghold into which folks could go with protection during a battle
projecting part of a rampart or other fortification