Definition of fingertip noun from the Oxford Advanced American Dictionary

 

fingertip

 noun
noun
NAmE//ˈfɪŋɡərtɪp//
 
[usually plural]
 
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  • the end of the finger that is furthest from the hand Apply the cream gently using your fingertips.
  • Idioms
    have something at your fingertips
     
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    to have the information, knowledge, etc. that is needed in a particular situation and be able to find it easily and use it quickly I made sure I had all the facts at my fingertips before attending the meeting.
    See the Oxford Advanced Learner's Dictionary entry: fingertip