Palindrome for the sound of a HORN?

This is a fun word puzzle! Here are a few options, playing on different aspects of the "sound of a horn":

Based on the actual sound:

* "Toot" is a common onomatopoeia for a horn, and it's a palindrome!

Based on the instrument:

* "Honk" is another common onomatopoeia, and while not a palindrome itself, it's close!

Based on the feeling of the sound:

* "Roar" can be used to describe a loud horn sound, and it's a palindrome.

* "Boom" is another word for a powerful, echoing sound, and it's a palindrome.

Let me know if you want to play with more possibilities!