Kinktionary
More like guidelines and a lot less like definitions.
Cuddle Slut
One who enthusiastically enjoys cuddling. Though cuddling in this context is not necessarily sexual in nature, some cuddle sluts prefer to cuddle primarily with folks of the gender(s) they are sexually attracted to.
Not to be confused with a Professional Cuddler, which is a person who fulfills others' need for cuddling in exchange for money.