rainbow[noun]Synonyms: pipe dream, bubble, chimera, dream, fantasy (
or phantasy), illusion, pipe
[TahlilGaran] English Synonym Dictionary ▲
rain‧bow /ˈreɪnbəʊ $ -boʊ/
noun [countable] a large curve of different colours that can appear in the sky when there is both sun and rain
[TahlilGaran] Dictionary of Contemporary English ▲