Yes, tie is a Scrabble word!

Verb

1. Fasten or secure with a rope, string, or cord

2. Finish a game with an equal number of points, goals, etc.

3. Limit or restrict to

4. Connect, fasten, or put together two or more pieces

5. Form a knot or bow in

6. Create social or emotional ties

7. Perform a marriage ceremony

8. Make by tying pieces together

9. Unite musical notes by a tie

Noun

1. Neckwear consisting of a long narrow piece of material worn (mostly by men) under a collar and tied in knot at the front

2. A social or business relationship

3. Equality of score in a contest

4. A horizontal beam used to prevent two other structural members from spreading apart or separating

5. A fastener that serves to join or connect

6. The finish of a contest in which the score is tied and the winner is undecided

7. (music) a slur over two notes of the same pitch; indicates that the note is to be sustained for their combined time value

8. One of the cross braces that support the rails on a railway track

9. A cord (or string or ribbon or wire etc.) with which something is tied