Lexical Definition

‎שַׁחֲרוּת‎ shachărûwth (shakh-ar-ooth') dark hair ^H:N-F
from ‎שָׁחַר‎

youth.

• a dawning, i.e. (figuratively) juvenescence

1) blackness
1a) blackness (of hair indicating youth)

Brown-Driver-Briggs

‎שַׁחֲרוּת‎ noun feminine according to DE^Comm. Rüetschi^Kau blackness, namely, of hair (so ᵑ7), i.e. (RV) prime of life (which Wild allows); usually dawn of youth (II. ‎שׁחר‎); — Eccl 11:10 (+ ‎יַלְדוּת‎).

Brown-Driver-Briggs References