pow

Short definition from Wiktionary

Interjection

1. 1
   The sound of a violent impact, such as a punch.
2. 2
   The sound of an explosion or gunshot.

Noun

1. 1
   The sound of a violent impact.
2. 2
   The sound of an explosion.
3. 3
   Alternative form of poll.
4. 4
   Clipping of powder (“powder snow”).
5. 5
   Initialism of prisoner of war.
6. 6
   Initialism of place of worship.
7. 7
   Alternative letter-case form of PoW (“proof of work”).
8. 8
   Initialism of proof of work.
9. 9
   Alternative letter-case form of POW (“prisoner of war”).

Proper noun

1. 1
   A surname.