sterile

adjective

1. 1

   Unable to reproduce (or procreate).

2. 2

   Terse; lacking sentiment or emotional stimulation, as in a manner of speaking.

3. 3

   Fruitless, uninspiring, or unproductive.

4. 4

   Germless; free from all living or viable microorganisms.

   “a sterile kitchen table”

5. 5

   Free from dangerous objects, as a zone in an airport that can be only be entered via a security checkpoint.

6. 6

   Of weapons: foreign-made and untraceable to the United States.