Guard

1. The fibrous sheath which covers the phragmacone of the Belemnites.
2. To protect the edge of, esp. with an ornamental border; hence, to face or ornament with lists, laces, etc.
3. A man, or body of men, stationed to protect or control a person or position; a watch; a sentinel.
4. A chain or cord for fastening a watch to one's person or dress.
5. To protect from danger; to secure against surprise, attack, or injury; to keep in safety; to defend; to shelter; to shield from surprise or attack; to protect by attendance; to accompany for protection; to care for.
6. To watch by way of caution or defense; to be caution; to be in a state or position of defense or safety; as, careful persons guard against mistakes.
7. A fence or rail to prevent falling from the deck of a vessel.
8. One who, or that which, guards from injury, danger, exposure, or attack; defense; protection.
9. A posture of defense in fencing, and in bayonet and saber exercise.
10. Any fixture or attachment designed to protect or secure against injury, soiling, or defacement, theft or loss
11. That part of a sword hilt which protects the hand.
12. A plate of metal, beneath the stock, or the lock frame, of a gun or pistol, having a loop, called a bow, to protect the trigger.
13. An extension of the deck of a vessel beyond the hull; esp., in side-wheel steam vessels, the framework of strong timbers, which curves out on each side beyond the paddle wheel, and protects it and the shaft against collision.
14. An expression or admission intended to secure against objections or censure.
15. One who has charge of a mail coach or a railway train; a conductor.
16. To keep watch over, in order to prevent escape or restrain from acts of violence, or the like.
17. Ornamental lace or hem protecting the edge of a garment.
18. An interleaved strip at the back, as in a scrap book, to guard against its breaking when filled.
19. To fasten by binding; to gird.
20. Watch; heed; care; attention; as, to keep guard.