/foot"see/ , n. Informal.
1. Sometimes, footsies . the act of flirting or sharing a surreptitious intimacy.
2. play footsie or footsies with ,
a. to flirt with, esp. by clandestinely touching someone's foot or leg; be slyly or furtively intimate with.
b. to seek advantage from, esp. by discreet or stealthy means; curry favor with.
Also, footie .
[ 1930-35; FOOT + -sie, sp. var. of -SY ]