孑

孑 is a simple pictograph that originally depicted a child with a left arm but no right arm, a visual metaphor for physical incompleteness and isolation. This image of a solitary, maimed figure gave rise to the abstract meanings of being alone, solitary, or orphaned and cut off from any support network. The character frequently appears in poetic or formal registers to stress extreme loneliness or an individual's complete isolation. Additionally, it occurs in the binome 孑孓, which denotes mosquito larvae, a name likely motivated by the larvae's jerky, singular movements in water that recall the isolated, truncated form of the character.