1. A feeling of wanting to know or find out about something. 2. Interest is more consideration than attention and is, therefore, attention with intention. 3. Attention with an intention to give or attract attention. 4. A state of curiosity or concern about or attention to something. 5. A right, claim, or legal share: an interest in the new company. 6. Something in which such a right, claim or share is held. 7. A person or group of persons holding such a right, claim or share. 8. Involvement with or participation in something. 9. A charge for a loan, usually a percentage of the amount loaned.