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1). Someone who screams way too much (TOS definition)

2.) A young person who is very intelligent (ST:XI definition)

Both definitions are based off of the Star Trek character of Ensign Pavel Chekov, USS Enterprise navigator.
1.) "Didi you see him during that scary movie? He was being such a Chekov. I couldn't hear right the rest of the night.

2.) That kid's a real Chekov. He's got a 4.0 grade in advanced physics.
by WannabeRomulan August 14, 2010
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