Crescent moon
A thin curved moon — the beginning or end of a cycle, visible as a single bright edge.
A crescent moon in a dream is the dream's image of a cycle showing only one of its narrow edges. The rest of the moon is there; only the thin slice is being lit. The dream brings the crescent when something in your life — a project just begun, a phase nearly ended, a relationship in its narrow visible part — is currently presenting as a small bright line against a large unlit body. A crescent noticed and credited as the start of growing light is the dream affirming the read. A crescent mistaken for all the light there is going to be, with the rest of the moon dismissed as absent, is the dream noting that the visible part has been taken for the whole.