Stem (noun)

1. The main upright axis of a plant or tree, typically supporting branches and leaves.
2. The part of a plant from which leaves, flowers, or fruit grow.
3. The base or central part of something from which other parts extend.
4. A slender stalk that supports an individual flower in an inflorescence.
5. A wooden or metal rod or shaft used to support or steady a structure.

Origin:

Old english stefn "stem, trunk of a tree", of germanic origin; related to german stamm.

Examples:

1. The stem of the flower was long and thin.
2. The stem of the wine glass was delicate and fragile.
3. The stem cells have the ability to develop into many different types of cells.
4. She cut the stem of the roses to put in a vase.
5. The stem of the mushroom was edible.