WHILE PONDERING A RHYME FOR THIMBLE

While pondering a rhyme for thimble,

reject at all costs using bimble.

Your brain might be considered nimble

if it went with a word like symbol,

the same, but different, from cymbal.

There is, of course, no word spelled simble

which brings us back to the unword bimble

which you must not rhyme with thimble.