Seriously? You searched up the definition of definition? Shut up. GET OUTTA HERE

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy

this

If I knew what this word meant, I would place the definition here.

In reality: The meaning of a word
On Urban Dictionary: Something sex- porn- or reproductive system-related

A statement of the meaning of a term. The term to be defined is the definiendum. The term may have different senses and multiple meanings. For each meaning, definiens is a cluster of words that defines that term.

A definition will vary in aspects like precision or popularity. There are also different types of definitions with different purposes and focuses (e.g. intensional, extensional, descriptive, stipulative, and so on).

A chief difficulty in the management of definitions is the necessity of using other terms that are already understood or whose definitions are easily obtainable or demonstrable (e.g. a need, sometimes, for ostensive definitions).

A dictionary definition typically contains additional details about a word, such as an etymology and the language or languages of its origin, or obsolete meanings.

The meaning of a word, you silly mofos.