A rumāl (Punjabi: ਰੁਮਾਲ) is a piece of clothing similar to a handkerchief or bandana.
Covering the head is respectful in Sikhism and if a man is not wearing a turban, then a rumāl must be worn before entering the Gurdwara.
If there are no rumāls supplied by the Gurdwara then a clean and plain handkerchief is the most suitable cloth to use.
Outside the context of Sikhism, a rumāl is simply the Urdu, Hindi, Nepali and Bengali word for handkerchief, and will be understood as such.
A coin was knotted in one end of the scarf, and would be swung around the neck of the victim, who would then be strangled.