It can also be used as a noun, a colloquialism.

"Carry Out" or "Take Out" is food you can order from a restaurant and not eat it there, but it is packed so you can take it home.

Most restaurants offer this service in the US.  Some restaurants (especially Chinese and Italian/Pizza) are primarily Take Out and have very limited seating. 

carry out
to do or complete something, especially that you have said you would do or that you have been told to do:

If no one can help me at this moment, I am afraid I can not carry out  (proceed, perform, complete)  the mission.