noun. Plural form of in.

abbreviation. insert

"To charge extra for over size check ins is one thing, but to charge for what may be little more than a few personal items within a certain size is "highway robbery" and should be stopped before we have to wear everything we bring onto the plane. bags"

ins and outs  

Bess  Es  Etess  Finns  Fs  

bureaucracy  directorate  hierarchy  higher echelons  higher-ups