### Question
What does ballistic knife mean?


### Answer
**Ballistic knife** has the following meaning in *18 U.S.C. § 1716*:

> a knife with a detachable blade that is propelled by a spring-operated mechanism

#### Citation:
  - *18 U.S.C. § 1716*
  - Heading: **PART I-CRIMES > CHAPTER 83-POSTAL SERVICE**

