Shaft
noun
The entire body of a long weapon, such as an arrow.
The long, narrow, central body of a spear, arrow, or javelin.
“Her hand slipped off the javelin's shaft towards the spearpoint and that's why her score was lowered.”
(by extension) Anything cast or thrown as a spear or javelin.
Synonyms: rachis, mineshaft, stail, stale, steal, steel, stele
verb
To fuck over; to cause harm to, especially through deceit or treachery.
“Your boss really shafted you by stealing your idea like that.”
To equip with a shaft.
To fuck; to have sexual intercourse with.
“Turns out my roommate was shafting my girlfriend.”