I had to first find out what 'onomatopoeia' meant before I could take a photo.
It turns out it is the process of creating a word that phonetically imitates, resembles, or suggests the sound that it describes. Such a word itself is also called an onomatopoeia. Common onomatopoeias include animal noises such as "oink", "meow", "roar" and "chirp". (Wikipedia)
I remember learning this term in high school English.....and now, 50 years later I think it's the first time I've actually heard it used. Thanks for the refresher!