noun
stiletto
stih-LET-oh/stɪˈletəʊ/
A slender sharply pointed dagger.
The stiletto has a slender blade and a sharply pointed tip.

Etymology
Stiletto originally named a small, slender dagger. Its narrow, pointed shape supplied the image for a very thin high heel, and the shoe takes its name from that heel.
In context
Karen was in the news this week apparently she used her a Louboutin stiletto as a weapon
More examples
- He draws a stiletto from its sheath.
- Unlike the broad hunting knife, this stiletto has a narrow blade.
- The collection includes three stilettos with decorated handles.
Forms
stiletto · stilettos · stilettoes