This is a pictograph of a fairly large brush of the kind used to apply grease to wooden wheels. It is the verb to brush.
Illustrative Text Reference:
Harappa: Seal: H-10 a: Jagat Pati Joshi and Asko Parpola, 1987: Corpus of Indus Seals and Inscriptions: Volume 1: Page 167: Collections in India: Suomalainen Tiedeakatemia.
Image Credit:
Brush (for grease): Lynn Fawcett, 2017.