Definition of “bulb” - English Dictionary

(Definition of “bulb” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

“bulb” in American English

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bulbnoun [ C ]

us /bʌlb/

bulb noun [ C ] (LIGHT)

a light bulb:

The bulb burned out in the kitchen.

bulb noun [ C ] (PLANT)

a ball-like root from which some plants grow:

Lilies and tulips grow from bulbs.

(Definition of “bulb” from the Cambridge Academic Content Dictionary © Cambridge University Press)