This pictograph is based on the cocoon shape. It depicts a rope with two unbraided strands. Hence, it is the noun rope strands.
Illustrative Text Reference:
Harappa: Seal: H-61 a: Jagat Pati Joshi and Asko Parpola, 1987: Corpus of Indus Seals and Inscriptions: Volume 1: Page 183: Collections in India: Suomalainen Tiedeakatemia.
It is interesting that in inscription H-61, the noun rope strands is followed by the verb to splice. Don Casey states that a splice retains 95% of the rope's strength¹. This would have been vital
for a ropeway.
Rope Strands: Lynn Fawcett, 2019.
1. Don Casey: How to Splice a Three Strand Rope: Boat Owners Association of the United States: https://www.boatus.com/boattech/casey/rope.asp: Accessed: 17 August 2019.