Yes, ais is a Scrabble word!

Noun

1. An agency of the United States Army responsible for providing timely and relevant and accurate and synchronized intelligence to tactical and operational and strategic level commanders

2. The branch of computer science that deal with writing computer programs that can solve problems creatively

3. A sloth that has three long claws on each forefoot and each hindfoot

4. The introduction of semen into the oviduct or uterus by some means other than sexual intercourse