mirage

英 ['mɪrɑːʒ; mɪ'rɑːʒ] 美[mə'rɑʒ]

• n. 海市蜃楼；幻想，妄想

1. an optical illusion in which atmospheric refraction by a layer of hot air distorts or inverts reflections of distant objects

2. something illusory and unattainable