This is a pictograph of a stepped shrine with eight storeys. Hence, it is the noun shrine.
Illustrative Text Reference:
Mohenjo-daro: Seal: M-58 a: Jagat Pati Joshi and Asko Parpola, 1987: Corpus of Indus Seals and Inscriptions: Volume 1: Page 27: Collections in India: Suomalainen Tiedeakatemia.
Image Credit:
Shrine Eight Storeys: Lynn Fawcett, 2018.