Licence

A contractual permission granted by the owner of a right, or item of property to another person to use that property or exercise that right. This might be an exclusive licence (as with a physical item — only one person can use it at a time) or non-exclusive (as with intellectual property, where many people can share the right without upsetting each other).

Discussed in that great legal monograph, Billy Idol’s Rebel Yell, in the context of a “licence for love” — a licence for love of course usually being exclusive, but when it comes to rock stars, and persons with whom they consort who explicit tout the availability of their own love for licence, possibly not so much<ref>Then again, one can exclusively licence one’s love, for valuable consideration, for a short period of time, so maybe not.