footsie

1. a child's word for a person's foot.

   give those tired footsies a well-earned rest

2. the action of touching someone's feet lightly with one's own feet, especially under a table, as a playful expression of romantic interest.

   the evening ended with a game of footsie under the table

mid 18th century: humorous diminutive of foot.

noun, singular proper noun

the Financial Times Stock Exchange index, indicating the relative prices of shares on the London Stock Exchange.

1980s: fanciful elaboration of FTSE, influenced by footsie.