A Fling

1. An act of throwing, often violently.
2. An act of moving the limbs or body with violent movements, especially in a dance.
3. An act or period of unrestrained indulgence.
4. A short casual sexual relationship.

Synonym: hookup

5. (figuratively) An attempt, a try (as in "give it a fling").
6. (obsolete) A severe or contemptuous remark; an expression of sarcastic scorn; a gibe or taunt.
7. A lively Scottish country dance.
8. (obsolete) A trifling matter; an object of contempt