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Use "half-moons" in a sentence
"Tetrahedrons, half-moons and elegant ticks intersect in vivid primary hues, while the mud-shaded Study For Darwin offers a round, triangular and square window big enough to walk through."
"Don't let the screen door hit you on the half-moons on the way out the door."
"His eyes were partially closed, the pale irises and whites of his eyes like half-moons, his mouth slightly open."