Half-moon

Noun

 * 1) the moon, in its first or last quarter, when only half the face is illuminated
 * 2) anything shaped like a crescent, especially the base of a fingernail

Thesaurus
artificial satellite, crescent, crescent moon, decrescent, decrescent moon, demilune, full moon, gibbous moon, harvest moon, horseshoe, increscent, increscent moon, lunula, lunule, meniscus, moon, new moon, orb of night, queen of heaven, queen of night, satellite, scythe, semicircle, sickle, silvery moon, the wandering Moon, waning crescent moon, waning moon, waxing crescent moon, waxing moon, wet moon