from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Informal The act of flirting in which one secretly touches the feet or legs of another with one's own, as under a table.
- idiom play footsie with To flirt with, especially in secret.
- idiom play footsie with To cooperate or curry favor with in a sly or devious way.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A flirting game where two people touch each other's feet with their feet, under a table or otherwise concealed place, as a romantic prelude.
- n. foot
From diminutive of foot.(American Heritage® Dictionary of the English Language, Fourth Edition)