.v) To punch or jab in the throat with lightning quick speed and agility, collapsing the airway and causing death within six seconds.
Baby Neeson - .n) a flick to the throat causing a minor inconvenience and/or discomfort.
Down South Neeson - .n) the act of Liam Neesoning someone in the crotch area.
Spectator 1: "Did you see that? That guy just got straight Liam Neesoned!"
Spectator 2: "He's not moving...I think he might be dead."
Spectator 1: "That's because Liam Neeson finishes things."
*See: the film Taken*
When a person or object is no longer available for a specific use due to someone else taking it first.
Charlie: Dude, who's that ridiculously hot chick over by the bar?
Dennis: That's Kate bro. Don't get your hopes up. She's Liam Neesoned. She's dating Greg.
Mac: Who the hell Liam Neesoned all my sleeveless shirts?
Frank: I think i saw Scumbag Steve rocking your cut offs at his place the other day.