All 6 Uses

bastion
in
All the Light We Cannot See
(Edited)

"Bastion de la Hollande," she whispers, and her fingers walk down a little staircase.
p. 5.6

bastion = defensive fortification
Again her fingers find the outer ramparts, the Bastion de la Hollande, the little staircase leading down.
p. 12.3
Storms rinse the sky, the beaches, the streets, and a red sun dips into the sea, setting all the west-facing granite in Saint-Malo on fire, and three limousines with wrapped mufflers glide down the rue de la Crosse like wraiths, and a dozen or so German officers, accompanied by men carrying stage lights and movie cameras, climb the steps to the Bastion de la Hollande and stroll the ramparts in the cold.
p. 331.2
The Austrians at the Hotel of Bees use a crane to lower an 88-millimeter cannon onto a bastion in the ramparts.
p. 408.7 *
Below the window, on one of the bastioned traces on the seaward side of the hotel, waits the big 88.
p. 437.4

bastioned = fortified
We still hold the château and the Bastion de la Hollande.
p. 448.1

bastion = defensive fortification

Definitions:

(1) (bastion)
a strong defender or reliable example of something -- like a fortress or a person upholding a principle
(2) (meaning too rare to warrant focus)