This symbol represents the profile of a stylus, and lines created by the stylus. Hence, it is the verb to etch.
Illustrative Text Reference:
Mohenjo-daro: Seal: M-628 a: Sayid Ghulam Mustafa Shah and Asko Parpola, 1991: Corpus of Indus Seals and Inscriptions: Volume 2: Page 11: Collections in Pakistan: Suomalainen Tiedeakatemia.
Comments:
This is Mahadevan's sign number 1033, which I have redrawn to better reflect the original.
The best reproduction of this symbol can be found in Marshall's image of a sealing taken from M-628¹.
Image Credit:
To Etch: Lynn Fawcett, 2019.
Note:
1. Mohenjo-daro: Seal: Image: 33: Sir John Marshall, 1931: Mohenjo-Daro and the Indus Civilization....being an official account of the archaeological excavations.....carried out by the Government of India between the years 1922 and 1927: Volume III, Plate: CIV: Arthur Probsthain.