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1.
A legsy (legsies) is a flirtatious physical act in which someone sits next to another and rubs, touches or pushes his/her leg onto the person, much like footsies.
Finn sits very close to Bella and intimately pushes his leg towards hers so that they touch. She then pushes back flirtatiously and they begin a legsy.
by Visu October 08, 2013
 
2.
It's a nickname given to people with big legs, usually a shy and innoccent person with a good personality once you get to know them
Waheyy it's legsy
by Chick-09 September 06, 2008