A substance found in some plants that can be used to make medicine for pain and fever.
Salicine is a helpful thing that can make people feel better when they are sick.
Examples:
The doctor gave me medicine with salicine in it.
Salicine comes from the bark of willow trees.
Plants with salicine can help people feel better.
I need some medicine with salicine in it, please.
In the old days, people used plants with salicine to help them feel better.
The medicine with salicine in it made me feel better.