This is a pictograph of a row of seven teeth. It is the adjective edible.
Illustrative Text Reference:
Harappa: Tablet in bas-relief: H-1988 A: Asko Parpola, B. M. Pande, and Petteri Koskikallio, 2010: Corpus of Indus Seals and Inscriptions: Volume 3,1: Page 272: New material, untraced objects,
and collections outside India and Pakistan: Suomalainen Tiedeakatemia.
There are three tablets H-1988, H-1989 and H-1990 that carry an identical inscription.