This is a pictograph of a tea plant growing out of a sloping piece of earth. Hence, it is an ideograph for tea growing.
Illustrative Text Reference:
Mohenjo-daro: Seal: M-663 a: Sayid Ghulam Mustafa Shah and Asko Parpola, 1991: Corpus of Indus Seals and Inscriptions: Volume 2: Page 30: Collections in Pakistan: Suomalainen Tiedeakatemia.
Comments:
There is only one extant example of this Indus sign.
Seal M-663 is damaged and the inscription is incomplete. Therefore, any translation has to be tentative. One possibility is 'tea growers'.
Image Credit:
Tea Growing: Lynn Fawcett, 2020.