Keratin Covering on the First Digit of a Hand
This page is the CodyCross answer for the clue below from New York, New York!, Group 377, Puzzle 3 (Harlem Renaissance).
Question is: Keratin Covering on the First Digit of a Hand
and the answer is: THUMBNAIL
Word Meaning:
THUMBNAIL — The fingernail on the thumb.
Definitions from Wiktionary.