bulb
/bʌlb; bʌlb/ n
=>illus 见插图.
1 thick rounded underground stem of certain plants (eg the lily, onion, tulip) sending roots downwards and leaves upwards 球茎（如百合、洋葱、郁金香等植物的地下茎）. =>illus at App 1 见附录1之插图, page ii.
2 (also `light bulb) pear-shaped glass container for the filament of an electric light 电灯泡: change a bulb 换灯泡
a 60-watt light bulb 60瓦的灯泡.
3 object shaped like a bulb, eg the bulging end of a thermometer 球茎状物（如温度计球状的一端）.