| bulb | (noun) electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity | Synonyms: electric-light bulb, electric light, incandescent lamp, light bulb, lightbulb |
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| (noun) a rounded part of a cylindrical instrument (usually at one end) | - |
| (noun) a rounded dilation or expansion in a canal or vessel or organ | - |
| (noun) lower or hindmost part of the brain; continuous with spinal cord; (`bulb' is an old term for medulla oblongata) | Synonyms: medulla, medulla oblongata |
| (noun) a modified bud consisting of a thickened globular underground stem serving as a reproductive structure | - |
| (noun) anything with a round shape resembling a teardrop | - |
| bulbaceous | (adjective) producing or growing from bulbs | - |
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| bulbar | (adjective) involving the medulla oblongata | - |
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| bulbed | (adjective) having a bulb | - |
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| bulbil | (noun) small bulb or bulb-shaped growth arising from the leaf axil or in the place of flowers | Synonyms: bulblet |
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| bulblet | (noun) small bulb or bulb-shaped growth arising from the leaf axil or in the place of flowers | Synonyms: bulbil |
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| bulblike | (adjective) shaped like a bulb | Synonyms: bulb-shaped, bulbous |
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| bulbous | (adjective) curving outward | Synonyms: bellied, bellying, bulging, bulgy, protuberant |
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| (adjective) shaped like a bulb | Synonyms: bulb-shaped, bulblike |
| bulbul | (noun) nightingale spoken of in Persian poetry | - |
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