Any of certain saltwater sciaenid (Sciaenidae) fishes.
Any of several weeds in or formerly classified in the genus Centaurea, particularly Russian knapweed (Acroptilon repens).
A Scottish billon coin circulated in the reigns of Mary and James VI.
Residual ore that failed to melt during a smelting process.
One who is practical or hardheaded.
A brown diving duck, Aythya australis, native to Australia.
Mylopharodon conocephalus of fresh waters in California.
Rainbow trout.
A curveball, particularly a slow one.
In Texas hold 'em or Omaha hold 'em, a flop that contains three different suits.
Any prismatic refraction of light showing a spectrum of colours.
A multicoloured arch in the sky, produced by prismatic refraction of light within droplets of rain in the air.
A wide assortment; a varied multitude.
An illusion, mirage.
Made up of several races or ethnicities, or (more broadly) of several cultural or ideological factions.
Multicolored.
LGBT.
Composed entirely of different suits.
Of or pertaining to rainbow tables.
To brighten with, or as with, a rainbow; to pattern with the colours of the rainbow.
To take the appearance of a rainbow.
In climbing gyms where the rocks to climb are colored to indicate suggested climbing routes, to climb rocks of different colors, thereby ignoring such routes.