bulb
/bʌlb/noun
1
- 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, lying dormant over winter鳞茎。比较CORM, RHIZOME.
1.1
- a plant grown from an organ of this kind鳞茎植物。
1.2
- a similar underground organ such as a corm or a rhizome球茎, 块茎, 球根。
2
- an object with a rounded or teardrop shape like a bulb, in particular球状物, 泪珠状物, 尤指：
2.1
- short for LIGHT BULB.LIGHT BULB 的简称。
2.2
- an expanded part of a glass tube such as that forming the reservoir of a thermometer（温度计的）玻璃泡。
2.3
- a hollow flexible container with an opening through which the air can be expelled by squeezing, such as that used to fill a syringe（注射器）喷头。
2.4
- a spheroidal dilated part at the end of an anatomical structure（解剖结构）末端的球形膨胀, 肿块管。
词源
late Middle English: via Latin from Greek bolbos 'onion， bulbous root'.