Refers to the visible outline or silhouette of a thing, often when partially hidden or seen from a distance. Commonly used in expressions like 物影が見える (to see a shape/figure) or 物影が動く (a shape moves).
Compound of 物 (もの, 'thing') and 影 (かげ, 'shadow, silhouette'). The exact historical derivation is uncertain, but the combination naturally yields the meaning 'shape of a thing'.
