'Onomatopoeia' is a reasonably common word used to describe words that sound like the sounds they're used to describe. I was wondering whether there was an analogous term for words that sound like what their meanings look like — words like 'glint' or 'shimmer'.
John Lawler has some works on phonosemantics, which connect the meaning of words to the way they sound. I think that Bouba/Kiki, onomatopoeia and the OP's question can be seen as special cases of phonosemantics.
Perhaps @JohnLawler himself can drop by and explain much better than me. :-)