A spinneret is a part of a spider's body that it uses to make silk for webs.
Spinnerets are special parts of a spider's body that make people think of spiders and their webs.
Examples:
The spider uses its spinneret to make a web.
I saw a spider with a big spinneret.
The spinneret is at the back of the spider.
The spinneret makes the silk for the web.
The spinneret is like a magic silk-making machine!
The spider's spinneret is very important for making its home.