bulb

nouns

a modified bud consisting of a thickened globular underground stem serving as a reproductive structure
bulb
is derived from
bulbaceous
is a type of (narrower)
a slender or elongated structure that supports a plant or fungus or a plant part or plant organ
stalk, stem
electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity
bulb, electric light, electric-light bulb, incandescent lamp, light bulb, lightbulb
a rounded part of a cylindrical instrument (usually at one end)
"the bulb of a syringe"
bulb
is derived from
bulbous
is a part of
thermometer consisting of mercury contained in a bulb at the bottom of a graduated sealed glass capillary tube marked in degrees Celsius or Fahrenheit; mercury expands with a rise in temperature causing a thin thread of mercury to rise in the tube
mercury thermometer, mercury-in-glass thermometer
is a part of
a medical instrument used to inject or withdraw fluids
syringe
is a type of (narrower)
something less than the whole of a human artifact
"the rear part of the house"; "glue the two parts together"
part, portion
anything with a round shape resembling a teardrop
bulb
is derived from
bulblike
is a type of (narrower)
a shape that is curved and without sharp angles
round shape
lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata)
"the medulla oblongata is the most vital part of the brain because it contains centers controlling breathing and heart functioning"
bulb, medulla, medulla oblongata
is derived from
bulbar
a rounded dilation or expansion in a canal or vessel or organ
bulb
is derived from
bulbous
is a type of (narrower)
a particular complex anatomical part of a living thing
"he has good bone structure"
anatomical structure, bodily structure, body structure, complex body part, structure