Crescent (noun)

1. The curved sickle shape of the waxing or waning moon.
2. A shape resembling a segment of a crescent moon.
3. A representation or image of the moon in its first or last quarter, or a symbol resembling this.

Origin:

Origin: middle english: from old french creissant, from latin crescere 'grow'.

Examples:

1. The crescent of the waxing moon was visible in the night sky.
2. The mosque was adorned with a crescent moon and star.
3. He wore a necklace with a pendant in the shape of a crescent.