stiletto

Short definition from Wiktionary

Noun

1. 1
   A small, slender knife or dagger-like weapon intended for stabbing.
2. 2
   A rapier.
3. 3
   An awl.
4. 4
   A woman's shoe with a tall, slender heel (called a stiletto heel).
5. 5
   A beard trimmed into a pointed form.

Verb

1. 1
   To attack or kill with a stiletto (dagger).