Entry 1 sense Webster, 1913 Crossbow /(krŏs"bō`)/ · Cross·bow · IPA /ˈkɹɒsbəʊ/ 01 n. A weapon, used in discharging arrows or bolts, formed by placing a bow crosswise on a stock. 1. A weapon, used in discharging arrows or bolts, formed by placing a bow crosswise on a stock.(Archery)