petard /pe-tär or -tärdˈ/

1. A case containing an explosive, used for blowing in doors, etc (Shakespeare petarˈ)
2. A moving firework

hoist with one's own petard see under hoist

• calf-ground
• calfless
• calflick
• calflicks
• calf-love
• calfs
• calf's-foot jellies
• calf's-foot jelly
• calfskin
• calfskins
• calf-time
• calf whale
• caliatour
• caliature-wood
• Caliban
• caliber
• calibered
• calibers
• calibrate
• calibrated
• calibrated airspeed
• calibrates
• calibrating
• calibration
• calibrations