bulb noun Stress: first syllable 🤍 Save Syllables: bulb (1) English Definition A rounded underground storage organ of some plants, or a glass bulb of a lamp. Example Sentence I installed a new light bulb in the room. US IPA /bʌlb/ 🔊 Listen US UK IPA /bʌlb/ 🔊 Listen UK Synonyms globe lamp corm tuber Share this Word Facebook WhatsApp X Telegram Copy Link