Yes, maces is a Scrabble word!

Noun

1. (trademark) a liquid that temporarily disables a person; prepared as an aerosol and sprayed in the face, it irritates the eyes and causes dizziness and immobilization

2. An official who carries a mace of office

3. Spice made from the dried fleshy covering of the nutmeg seed

4. A ceremonial staff carried as a symbol of office or authority