- 彩虹吸蜜鹦鹉 cǎihóngxīmìyīngwǔ rainbow lorikeetrainbow lorikeet (Trichoglossus moluccanus)
- 彩虹屁 cǎihóngpì extravagant flattery(slang) over-the-top praise
- 彩虹族群 cǎihóngzúqún LGBT+ communitythe LGBT+ community
- 彩虹旗 cǎihóngqí rainbow flagrainbow flag, also known as the LGBT pride flag
- 彩虹蜂虎 cǎihóngfēnghǔ rainbow bee-eaterrainbow bee-eater (Merops ornatus)
- 彩虹行动 cǎihóngxíngdòng Operation Regenbogenthe two mass scuttling operations carried out by the German navy: the scuttling of the German fleet at Scapa Flow in 1919 and Operation Regenbogen, the scuttling of U-boats in 1945
- 彩虹鹦鹉 cǎihóngyīngwǔ coconut lorikeetcoconut lorikeet (Trichoglossus haematodus)
