Cal. Penal Code § 16310

As used in this part, “boobytrap” means any concealed or camouflaged device designed to cause great bodily injury when triggered by an action of any unsuspecting person coming across the device. Boobytraps may include, but are not limited to, guns, ammunition, or explosive devices attached to trip wires or other triggering mechanisms, sharpened stakes, and lines or wire with hooks attached.