bastion /bastˈyən or bast-i-ən/

1. A kind of tower at the angle of a fortification
2. A defence, defender (figurative)

• borough-English
• borough-monger
• borough-mongers
• borough-reeve
• borough-reeves
• boroughs
• borrel
• borrell
• borrow
• borrowed
• borrowed time
• borrower
• borrowers
• borrow hole
• borrow holes
• borrowing
• borrowing days
• borrowings
• borrow pit
• borrow pits
• borrows
• borrow trouble
• bors
• borsch
• borsches