This is a pictograph of a dish. The symbol shares a common root with the Chinese character mǐn 皿. It is the noun dish.
Illustrative Text Reference:
Mohenjo-daro: Seal: M-1906 a: Asko Parpola, B. M. Pande, and Petteri Koskikallio, 2010: Corpus of Indus Seals and Inscriptions: Volume 3,1: Page 75: New material, untraced objects, and
collections outside India and Pakistan: Suomalainen Tiedeakatemia.