Definitions

1. adjective

relating to the little finger of a hand, especially of the human hand

“She used her pinky to pick up the tiny button.”

2. noun

the little finger of a hand, especially of the human hand

“He accidentally broke his pinky while playing the piano.”

3. verb

to use or tap the little finger in a gesture, especially as a sign of solidarity or friendship

“He pinky-swore to keep the secret.”