Onomatopoeia is word that mimics the sound of the object or action it refers to. When you pronounce a word, it will mimic its sound.
With a cluck-cluck here,
And a cluck-cluck there
Here a cluck, there a cluck,
Everywhere a cluck-cluck - Old Macdonald - Nursery Rhyme
Horsey horsey don't you stop
Just let your feet go clippetty clop
The tail goes swish and the wheels go round
Giddy up, we're homeward bound. - Nursery Rhyme
Few are vampires. None flit through the mirror.
Where they flutter at evening's a queer
Tonal hunting zone above highest C.
Insect prey at the peak of our hearing
Drone re to their detailing tee: - “Bat’s Ultrasound” by Les Murray
So its Ning Nang Nong
Cows go Bong!
Nong Nang Ning
Trees go ping
Nong Ning Nang
The mice go Clang
What a noisy place to belong
is the Ning Nang Ning Nang Nong!! - “On the Ning Nang Nong” by Spkie Milligan
Fell like a cannon-shot,
Burst like a thunderbolt,
Crash’d like a hurricane,
Broke thro’ the mass from below,
Drove thro’ the midst of the foe,
Plunged up and down, to and fro,
Rode flashing blow upon blow, - The Charge of the Heavy Brigade by Alfred Tennyson
WHEW! - “The Fourth” by Shel Silverstein
Hear the sledges with the bells-
What a world of merriment their melody foretells!
How they tinkle. tinkle, tinkle,
In the icy air of night!
While the stars that oversprinkle
All the heavens, seem to twinkle
With a crystalline delight, - ‘The Bells” by Edgar Allan Poe
To see more example of onomatopoeia, check out these 5 Examples of Onomatopoeia.