Very cool, I'd never thought about Morse code palindromes before. Using a list of ~370K English words I discovered a few other neat ones: rotor, taint, swigs, unsad, and waiting. There's only 27 morse code palindromes that are 5 characters or more in length.

Here's the Python script I cooked up: https://gist.github.com/vesche/ada491d63d77d8afa55a599c787df...