Javelin n. : A sort of light spear, to be thrown or cast by thew hand; anciently, a weapon of war used by horsemen and foot soldiers; now used chiefly in hunting the wild boar and other fierce game.

Javelin v. t. : To pierce with a javelin.

Example:
Is there any similarities between throwing a football and Javelin?

Taxonomy
javelins, spear, shield, the enemy, tactic, weapon, pilum, cavalry, plumbata, javelin throw, soldiers, the Roman, javelin throwing, pila, infantry, attack, Zulu, Peltasts.

Defination from the web:
javelin is almost always thrown by hand unlike the arrow and slingshot which are projectiles shot from a mechanism. ... The word javelin comes from Middle English and it derives from Old French javeline, a diminutive of javelot which meant spear. ...