…a rounded underground storage organ present in some plants, notably those of the lily family, consisting of a short stem surrounded by fleshy scale leaves or leaf bases and lying dormant over winter…
…a hoverfly that resembles a bumblebee, with larvae that are pests of daffodil bulbs…
…an ordinary exposed thermometer bulb, especially as used in conjunction with a wet bulb…
…one of the two thermometers of a psychrometer, the bulb of which is enclosed in wetted material so that water is constantly evaporating from it and cooling the bulb…
…a glass bulb inserted into a lamp or a socket in a ceiling, that provides light by passing an electric current through a filament or a pocket of inert gas…
…a low-wattage energy-efficient fluorescent light bulb designed for use in standard lighting equipment such as table lamps…
…a light bulb that flashes in order to illuminate a photographic subject, of a type that is used only once…
…a glass tube that radiates light when phosphor on its inside surface is made to fluoresce by ultraviolet radiation from mercury vapor…
