c.1400, "shield," diminutive of late Old English targe, from Old French targe "light shield," from Frankish *targa "shield" (cf. Old High German zarga "edging, border," German zarge, Old English targe, Old Norse targa "shield"), from Proto-Germanic *targo "border, edge." Meaning "object to be aimed at in shooting" first recorded 1757, originally in archery. Target audience is by 1951, early reference is to Cold War psychological warfare.