also: じんえい
noun
figure of a person; human figure
Refers to the visible shape or silhouette of a person, often at a distance or in dim light. Can be singular or plural.
遠くに人影が見えた。
I saw a figure of a person in the distance.
夜の公園には人影がなかった。
There was no sign of people in the park at night.
noun
shadow of a person
Specifically the shadow cast by a person, as opposed to the figure itself. Less common than sense 1.
地面に長い人影が伸びていた。
A long shadow of a person stretched across the ground.