If you mean the toothed/grippy section between the handles of kitchen scissors, it’s usually not decorative—it’s a surprisingly useful built-in jar/bottle opener and gripping tool.
What those “teeth” can do
- Crack nuts: The serrated jaws can grip and crack smaller nuts.
- Open bottle caps: Some kitchen shears have a shaped notch specifically for gripping caps.
- Open stubborn jars: The teeth can provide extra grip on lids or seals.
- Grip slippery objects: Serrations prevent things like herbs, packaging, or small food items from slipping.
- Crack shells: Depending on the scissors, the reinforced section can handle things such as crab or lobster shells.
- Open packaging: The teeth can hold a bag or package firmly while you cut it.
The clever part is that kitchen shears are designed as a multi-tool, so the manufacturer can hide several functions in the handles without adding another utensil to your drawer.
If you’re talking about a specific weird toothed part, send me a photo of the scissors and I can identify exactly what it’s designed to do.