Definition of "Interest" :
noun: a diversion that occupies one's time and thoughts (usually pleasantly)
"He counts reading among his interests."
noun: a reason for wanting something done
"In the interest of safety."
noun: the power of attracting or holding one's attention (because it is unusual or exciting etc.)
"They said nothing of great interest."
noun: a sense of concern with and curiosity about someone or something
"An interest in music."
noun: (usually plural) a social group whose members control some field of activity and who have common aims
"The iron interests stepped up production."
noun: (law) a right or legal share of something; a financial involvement with something
"They have interests all over the world."
noun: a fixed charge for borrowing money; usually a percentage of the amount borrowed
"How much interest do you pay on your mortgage?."
verb: excite the curiosity of; engage the interest of
verb: be on the mind of
verb: be of importance or consequence