Having fingers or toes that are joined together.
Some people might think this is strange, but it's just a different way for bodies to be.
Examples:
The bird has syndactyl feet.
The cat's syndactyl paws help it climb.
Syndactyl hands can still do many things.
I wish I had syndactyl feet so I could swim better.
In the story, the monster had big, scary syndactyl hands.
The syndactyl bird is very special.