Why does the name "Flick" have an onomatopoeic quality?

Let's start off by talking about what onomatopoeia actually is. 
 
In layman's terms, onomatopoeia is a word that's phonetically similar to the word that it describes.

Basically, that means that a word with an "onomatopoeic quality" should sound a bit like the thing it's referring to when you say it out loud. 

Here are a few examples of onomatopoeia: 

• Hiccups


• Sizzling


• Cuckoo


• Swish 


• Tweeted

Now, one at a time, say those words out loud while concentrating on the sounds they make. They should sound phonetically close to the words that they're describing. 

For example, the word "cuckoo" directly imitates the sound a cuckoo bird makes. Similarly, the word "swish" sounds like a swish does (think basketball) due to the ending "sh." 
 
Flick, on the other hand, is an example of onomatopoeia because the name "Flick" is phonetically close to the sound you hear when someone flicks something.

It's mostly emphasized in the ending "ick," and, because it sounds like the word it's describing, it's considered to have an onomatopoeic quality.