This is a pictograph of a double axe. It is an ideograph for the verb to clash, or to do battle.
Illustrative Text Reference:
Chanhujo-daro: Seal: C-23 a: Jagat Pati Joshi and Asko Parpola, 1987: Corpus of Indus Seals and Inscriptions: Volume 1: Page 333: Collections in India: Suomalainen Tiedeakatemia.
Image Credit:
Double Axe: Lynn Fawcett, 2018.