This is a pictograph of an adult person holding a shoulder pole. He could be hired for general unloading and carrying jobs. Hence, this is the noun general porter.
Illustrative Text Reference:
Mohenjo-daro: Tablet incised, copper: M-575 A: Jagat Pati Joshi and Asko Parpola, 1987: Corpus of Indus Seals and Inscriptions: Volume 1: Page 144: Collections in India: Suomalainen Tiedeakatemia.
Image Credit:
Indus Script Sign Number 25: Sign List of the Indus Script: Iravatham Mahadevan, 1977: The Indus Script: Texts, Concordance and Tables: The Director General Archaeological Survey of India.