The ancient Egyptian child hieroglyph is part of the Egyptian Gardiner's Sign List hieroglyphs for the beginning core subgroup of Man and his Occupations. It relates to the child, and childhood, and has a version for the Pharaoh, as a child.
The hieroglyphic equivalent of the child hieroglyph is nn as a phonogram. It is the ancient Egyptian language equivalent of hrd-(meaning "child").Betrò, 1995. Hieroglyphics: The Writings of Ancient Egypt, p. 36. The hieroglyph is also a determinative in words relating to childhood;Betrò, 1995, p. 36. (also an abbreviation for "child").
See also Gardiner's Sign List#A. Man and his Occupations List of Egyptian hieroglyphs Harpocrates
References
Betrò, 1995. Hieroglyphics: The Writings of Ancient Egypt, Maria Carmela Betrò, c. 1995, 1996-(English), Abbeville Press Publishers, New York, London, Paris (hardcover, ) Budge, 1989, (1929). The Rosetta Stone, E. A. Wallis Budge, (Dover Publications), c 1929, Dover edition(unabridged), 1989. (softcover, )