No the word whistled is not a noun. It is a past tense verb.
No whistled is not a verb
Nope. It could of decended from onomatopoeia (i think i spelt that right), but it's now a verb or noun.
The past tense of 'whistle' is whistled.
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 white woman who Emmett Till was accused of whistling at was Carolyn Bryant.
The wind whistled as it blew
There are two syllables. Whis-tled.