fortress /förˈtrəs or fōrˈ/

1. A fortified place
2. A defence

To guard

• soarings
• soars
• so as
• so as to
• Soave
• Soaves
• Soay
• Soay sheep
• s.o.b.
• sob
• S.O.B.
• SOB
• soba
• sobbed
• sobbing
• sobbingly
• sobbings
• so be it
• sobeit
• sober
• sobered
• soberer
• soberest
• sobering
• soberingly