What does "kaleidoscope" mean in Greek?

I sometimes ask Josh about words of Greek origin, and here is one specific question I asked at CIY that gives me an excuse to explain several. For some of these he didn’t know the full meaning, but I’ll give him credit for recognizing that they were Greek.

• kaleidoscope:  something through which you look at beautiful things (kalos=beautiful, eidos=shape, scope=something you look through)
• nostalgia: pain of home (nostos=poetic word for home, algos=pain)
• charisma: divine gift (kharis=grace)
• blasphemy: slander or speaking ill (pheme=to speak evil, blas=?)
• platypus: flat-footed (platys=broad or flat, pous=foot)