To make a high-pitched, squeaky sound, like a small animal or a door hinge.
Squark is a funny and cute word. It makes people think of small, funny animals or old, creaky doors.
Examples:
The mouse will squark when it is scared.
I heard the old door squark when I opened it.
The bird squarks loudly in the morning.
The toy made a funny squarking sound.
The little piglet squarks when it wants food.
The old chair squarks when you sit on it.