This is a pictograph of an adult person with their hair in a top knot. The symbol shares a common root with the Chinese character yǎo 夭. It is the noun young adult.
Illustrative Text Reference:
Mohenjo-daro: Ivory Rod: M-2090 A: Asko Parpola, B. M. Pande, and Petteri Koskikallio, 2010: Corpus of Indus Seals and Inscriptions: Volume 3,1: Page 121: New material, untraced objects, and
collections outside India and Pakistan: Suomalainen Tiedeakatemia.
This hairstyle is associated with the transition from childhood to adulthood.
Indus Script Sign Number 6: Sign List of the Indus Script: Iravatham Mahadevan, 1977: The Indus Script: Texts, Concordance and Tables: The Director General Archaeological Survey of India.