A javelin was a type of spear.
The Raston Warrior Robots fired javelins from their hands. (TV: The Five Doctors, PROSE: The Eight Doctors)
Jack Harkness was once killed by a stray javelin. (TV: Utopia)
Javelin throwing was one of the events in the Globe Games. Sid was a javelin thrower training for the Globe Games at BASE. (PROSE: The Sontaran Games)