1. Confined by bonds; tied: bound hostages.

2. Being under legal or moral obligation: bound by my promise.

3. Equipped with a cover or binding: bound volumes.

4. Predetermined; certain: We're bound to be late.

5. Determined; resolved: Many public policy students are bound to be politicians one day.

6. Linguistics Being a form, especially a morpheme, that cannot stand as an independent word, such as a prefix or suffix.

7. Constipated.