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bulb

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bulb /ˈbʌlb/ noun
plural bulbs
bulb
/ˈbʌlb/
noun
plural bulbs
Learner's definition of BULB
[count]
1 
: light bulb
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— see also dim bulb
2 
: a rounded part of some plants that is under the ground and that grows into a new plant during the growing season
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— see color picture on this page
3 
: a part that has a rounded shape
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