Nope. It could of decended from onomatopoeia (i think i spelt that right), but it's now a verb or noun.
To write a sentence with onomatopoeia, include words that sound like the noise they represent. For example, "The kettle whistled as it boiled." In this sentence, "whistled" is an onomatopoeic word mimicking the sound of the kettle.
No whistled is not a verb
The past tense of 'whistle' is whistled.
No the word whistled is not a noun. It is a past tense verb.
he sings a lot of whistled songs
whistled
He whistled as he walked away
what commercial
The wind whistled
The woman he reportedly whistled at was Carolyn Bryant
The wind whistled through the gaps in the trees as their branches swayed and crashed against each others. The onomatopoeias in this passage are whistled and crashed. I hope this helped.
Yelled is not an onomatopoeia:)