Definition of "Command" :
noun: availability for use
"The materials at the command of the potters grew."
noun: the power or authority to command
"An admiral in command."
noun: great skillfulness and knowledge of some subject or activity
"A good command of French."
noun: (computer science) a line of code written as part of a computer program
noun: an authoritative direction or instruction to do something
noun: a military unit or region under the control of a single officer
noun: a position of highest authority
"The corporation has just undergone a change in command."
verb: make someone do something
verb: be in command of
"The general commanded a huge army."
verb: demand as one's due
"This speaker commands a high fee."
verb: exercise authoritative control or power over
"Command the military forces."
verb: look down on