- For the electrical device that produces light, see Lightbulb.
--a type of bulb that people use for food.
A bulb is the part of some plants, mostly under the dirt, that stores food while the plant is resting from growing (a storage organ).
Some well-known bulbs people grow to use as food are onions and garlic. Some bulbs grown for the decorative flowers are the lily, tulip, and some irises.
Some plant storage organs that are similar to bulbs, but have different names are, tubers, corms (swollen stems), tuberous roots, and pseudobulbs.
Images for kids
Hippeastrum (amaryllis) bulb
Longitudinal section through bulb
Cross section of onion bulb
Bulbils form in the leaf axils of Lilium lancifolium
Wild garlic (Allium vineale) bulbils sprouting
"Tree onions" form clusters of small bulbs instead of flowers