play footsie (with)Informal
- to touch feet or rub knees (with) in a caressing way, as under the table
- to flirt (with) or have surreptitious, usually underhanded dealings (with)
Origin of footsieFrom diminutive of foot.
(countable and uncountable, plural footsies)
- Common term for the FTSE and the FTSE 100 Index
footsie - Investment & Finance Definition
A nickname for the Financial Times’ FT-SE 100 index, which is a capitalization-weighted index of 100 blue chip stocks that are traded on the London Stock Exchange.