This is a pictograph of a granary. Therefore, it is the noun granary.
Illustrative Text Reference:
Harappa: Tablet in bas-relief: H-1994 A: Asko Parpola, B. M. Pande, and Petteri Koskikallio, 2010: Corpus of Indus Seals and Inscriptions: Volume 3,1: Page 273: New material, untraced objects, and collections outside India and Pakistan: Suomalainen Tiedeakatemia.
Image Credit:
Granary: Lynn Fawcett, 2018.