n.
1.an authoritative direction or instruction to do something
2.a military unit or region under the control of a single officer
3.the power or authority to command
4.availability for use
5.a position of highest authority
6.great skillfulness and knowledge of some subject or activity
7.(computer science) a line of code written as part of a computer program command v.
1.be in command of
2.make someone do something
3.demand as one's due
4.look down on
5.exercise authoritative control or power over