Encyclopedia of historical weapons - Boss

Also umbo. The round shaped piece of metal at the center of a shield. Protects the hand.

Encyclopedia of historical weapons

From Encyclopedia

Grand guard
A large reinforcing plate designed for the tilt, attached to the left side of the breastplate to cover the left shoulder, the upper arm and…
Kite-shaped shield
A large, elon­gated triangular shield with a rounded top used throughout Europe from the tenth to the thir­teenth century, commonly…
Tip
The pointed end of a sword’s blade. Most swords taper towards the tip, but some are straight until the very tip.
Aclys
Wooden Roman throwing stick with a spiked head; attached to user's arm with a strap which enabled it to be retrieved after it had been thrown.
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