This is a pictograph of a kiln. It has a fire box at the base, what appear to be air ducts at the sides, and a chimney at the top. It is the noun kiln.
Illustrative Text Reference:
Mohenjo-daro: Seal: M-798 a: Sayid Ghulam Mustafa Shah and Asko Parpola, 1991: Corpus of Indus Seals and Inscriptions: Volume 2: Page 68: Collections in Pakistan: Suomalainen Tiedeakatemia.
Image Credit:
Indus Script Sign Number 4002: List of Sign Variants: Iravatham Mahadevan, 1977: The Indus Script: Texts, Concordance and Tables: The Director General Archaeological Survey of India.