Strong's #6856: tsipporen (pronounced tsip-po'-ren)
from 6852 (in the denominative sense (from 6833) of scratching); properly, a claw, i.e. (human) nail; also the point of a style (or pen, tipped with adamant):--nail, point.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
tsippôren
1) fingernail, stylus point
1a) finger-nail
1b) point (of a diamond)
Part of Speech: noun masculine
Relation: from H6852 (in the denominative sense [from H6833] of scratching)
Usage:
This word is used 2 times:
Deuteronomy 21:12: "her head, and pare her nails;"
Jeremiah 17:1: "is written with a pen of iron, and with the point of a diamond: it is graven upon the table"