Other forms: fingertips
The fingertip is the very end of a finger, where the print is. The most sensitive skin on the body.
It has an extraordinary density of nerve endings, which is why reading braille and judging texture are both done there, and why a paper cut on one hurts so much. The whorls of the print are formed in the womb and are unique even between identical twins. The phrase at your fingertips means immediately available, and having something at your fingertips is a compliment about knowledge.
1nounfingertipThe end of a finger.
“He ran a fingertip along the edge of the shelf.”
From finger + tip. Compare tiptoe and toetip.
Etymology from Wiktionary, CC BY-SA