ALL meanings of at one's finger tips
fin·ger·tip
A a - noun at one's finger tips the tip or end of a finger. 1
- noun at one's finger tips a covering used to protect the end joint of a finger. 1
- adjective at one's finger tips extending to the fingertips, as a coat, veil, etc.: a fingertip jacket. 1
- idioms at one's finger tips at one's fingertips, close at hand; easily or immediately available. at one's command or disposal, as recall of factual information: He has the answer at his fingertips. 1
- idioms at one's finger tips to one's fingertips, thoroughly; perfectly: She was a politician to her fingertips. 1