Yes, chairs is a Scrabble word!

Verb

1. Act or preside as chair, as of an academic department in a university

2. Preside over

Noun

1. A seat for one person, with a support for the back

2. The position of professor

3. The officer who presides at the meetings of an organization

4. An instrument of execution by electrocution; resembles an ordinary seat for one person

5. A particular seat in an orchestra