Yes, years is a Scrabble word!

Noun

1. A late time of life

2. A prolonged period of time

3. The time during which someone's life continues

4. A period of time containing 365 (or 366) days

5. A period of time occupying a regular part of a calendar year that is used for some particular activity

6. The period of time that it takes for a planet (as, e.g., Earth or Mars) to make a complete revolution around the sun

7. A body of students who graduate together