This is a pictograph of a manger. Hence, it is the noun manger or an ideograph for the noun fodder.
Illustrative Text Reference:
Harappa: Seal: H-22 a: Jagat Pati Joshi and Asko Parpola, 1987: Corpus of Indus Seals and Inscriptions: Volume 1: Page 172: Collections in India: Suomalainen Tiedeakatemia.
Image Credit:
Indus Script Sign Number 182: Sign List of the Indus Script: Iravatham Mahadevan, 1977: The Indus Script: Texts, Concordance and Tables: The Director General Archaeological Survey of India.