Where does “fingernail” come from?

Fingernail comes from Middle English nail, from Proto-Germanic naglaz, from Proto-Indo-European h₃nogʰ-, ultimately from Proto-Indo-European pénkʷe meaning five.

fingernail (English): The hard, flat translucent covering near the tip...

Definitions

  1. The hard, flat translucent covering near the tip...

Ancestry of “fingernail”, step by step

fingernail traces back through two separate lines of ancestry.

via English finger

StepLanguageWordMeaning
1EnglishfingerA slender jointed extremity of the human hand, (often) exclusive of the thumb, and the corresponding part, irrespective of including a thumb, in many other animals
2GermanFingerfinger
3Middle High Germanvingerfinger
4Old High Germanfingarfinger
5Proto-West Germanicfingrfinger
6Proto-Germanicfingrazfinger
7Proto-Indo-Europeanpenkʷrós

via English nail

StepLanguageWordMeaning
1EnglishnailThe thin, horny plate at the ends of fingers and...
2Middle EnglishnailAlternative form of nayl
3Old Englishnæġlnail
4Proto-West Germanicnaglnail; nail or peg used for fastening
5Proto-Germanicnaglaznail; nail or peg used for fastening
6Proto-Indo-Europeanh₃nogʰ-claw, nail; nail

Words derived from “fingernail

Every word from Proto-Indo-European penkʷrós