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Definition of Spring gun
1. Noun. A gun that is set to fire on any intruder that comes in contact with the wire that sets it off. 
Definition of Spring gun
1. Noun. a gun rigged to fire when a string is tripped ¹
¹ Source: wiktionary.com
|  | 
1. Noun. A gun that is set to fire on any intruder that comes in contact with the wire that sets it off. 
1. Noun. a gun rigged to fire when a string is tripped ¹
¹ Source: wiktionary.com