The Constitutional military rank of the President of the United States.
The highest rank in the United States military.
Franklin Roosevelt and Harry Truman were both commander-in-chiefs during World War II.
by Nicolaivich January 19, 2004
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1. n. A self-masturbatory term President Bush uses to reassure himself of his own superiority.

2. n. A term President Bush uses when he is asked a question he does not know the answer to.

Q: "Mr. Bush, do you take advice from your father?"
Bush: "I'm the commander-in-chief!"

Q: "Mr. Bush, why, again, did we invade Iraq?"
Bush: "I'm the commander-in-chief!"
by January 20th, 2009 December 6, 2006
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When you bang a girl while smoking a blunt, and railing her from top. While you're "cheefing," you're commanding the position on top of her.
"Yo, i was so horny, but wanted to I propositioned the 'commander in chief' and she was totally into it."
"Right on!"
by Dylan, Andy February 7, 2010
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Someone who has completed The Pentagon and also became a Five Star General. ie. They have had heterosexual sex with a member of all five branches of the US military (thus completing The Pentagon) and homosexual sex with a member of all five branches (thus becoming a Five Star General).
"Last year he slept with all those guys to become a Five Star General. Now, he's halfway through The Pentagon and about to become the Commander-in-Chief"
by TimmaC10 December 14, 2020
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A female who has slept with a member of each branch of the military.
The new girl is trying to become the new commander in chief. She already jumped from the air force to the army guys.
by Angry persona March 2, 2017
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