The little finger, often called the pinky in American English and pinkie in Scottish English (from the Dutch word pink, meaning little finger), is the most ulnar and usually smallest finger of the human hand, opposite the thumb, next to the ring finger. It is also called the anti-thumb, the fifth finger, the baby finger, or the fourth finger colloquially
Your pinkie is the smallest finger on your hand. He pushes his glasses up his nose with his pinkie. your smallest finger = little finger (Probably from pinkje, from pink )