pronounced: (Hee-knee-us)
Meaning -(like heinous) a person or wrongful act, (esp. a crime) Utterly awful or bad, totally reprehensible: a heinous offense, gross, billious, rancid behaviour.

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