seed
Definitions
The fertilized, mature ovule of a flowering plant, containing an embryo and capable of developing into another such plant.
A small, hard part of a plant from which a new plant can grow.
A person or thing that serves as the basis or starting point for something else.
Examples
She planted a sunflower seed in the garden and watched it grow.
The apple core contains several small seeds.
The underdog team was given a low seed in the championship tournament.