The word “crescent” refers to a shape resembling a segment of a ring, often described as a curved, elongated form that tapers to points at both ends, much like a moon in its first or last quarter. In a more specific context, it denotes the phase of the moon when it appears as a thin, curved sliver. Additionally, “crescent” can be used as a noun to refer to the actual crescent shape or as an adjective to describe something that has this curved form.