Shahīd (شهيد) pl. shuhada (شهداء)
witness, martyr. Usually refers to a person killed whilst fighting in "jihad fee sybil Allah" (jihad for the sake of Allah). Often used in modern times for deaths in a political cause (including victims of soldiers, deaths in battle, et cetera) which are viewed by some Muslims as a spiritual cause not just a political cause. But the real meaning of Jihad is to defend Islam in any way; thus, it could be in an economic way or could refer to fighting for the rights of the oppressed or the believers; most often it refers to mastering one's own inclination for evil and shirk (idolatry).