Xiphoid

[Sonia]

Of or pertaining to the xiphoid process; xiphoidian.

[Kit]

[Xiphoid], also known as a Retractable Forearm Dagger, is a class of weapons with a blade that is retractable into a forearm worn [wristband] or [bracer] sheath.Designed for swift and quick surprise attacks.
Xiphoid is used with other wrist-mounted weapons: claw [xiphoid], gun xiphoid, spike xiphoid

[Sommer]

Sword-shaped [object]

[Julene]

the Xiphoid is [part] of the [Sternum]