Representing a lamp wick of twisted flax. The uppermost loop is often the biggest of the three. These wicks were generally made of a folded strip of fabric twisted tightly and soaked in unused fat. This glyph was conventionally colored green. The phonogrammatic value of ḥ is derived by the rebus principle from ḥꜥt(“wick”).
Gardiner, Alan (1957) Egyptian Grammar: Being an Introduction to the Study of Hieroglyphs, third edition, Oxford: Griffith Institute, →ISBN, page 525
Henry George Fischer (1988) Ancient Egyptian Calligraphy: A Beginner’s Guide to Writing Hieroglyphs, New York: Metropolitan Museum of Art, →ISBN, page 11
Betrò, Maria Carmela (1995) Geroglifici: 580 Segni per Capire l'Antico Egitto, Milan: Arnoldo Mondadori Editore S.p.A., →ISBN
Peust, Carsten (1999) Egyptian Phonology: An Introduction to the Phonology of a Dead Language[1], Göttingen: Peust und Gutschmidt Verlag GbR, page 48