| Rainbow | |
| 1. n. A member of the Rainbow Guides, a Girl Guide movement for younger girls. | |
| 2. n. A multicoloured arch in the sky, produced by prismatic refraction of light within droplets of rain in the air. | |
| 3. n. Any prismatic refraction of light showing a spectrum of colours. | |
| 4. n. (often used with “of”) A wide assortment; a varied multitude. | |
| a rainbow of possibilities | |
| 5. n. (figurative) An illusion, mirage. | |
| Many electoral promises are rainbows, vanishing soon after poll day. | |
| 6. n. (baseball) A curveball, particularly a slow one. | |
| 7. n. (poker slang) In Texas hold 'em or Omaha hold 'em, a flop that contains three different suits. | |
| 8. n. Rainbow trout. | |
| 9. adj. Multicolored. | |
| 10. adj. (attributive, chiefly US) Made up of several races or ethnicities, or (more broadly) of several cultural or ideological factions. | |
| 11. adj. (attributive) LGBT. | |
| 12. adj. (poker, chiefly of a flop) Composed entirely of different suits. | |
| 13. v. To pattern with many colours, like a rainbow. | |
