marrow noun Stress: first syllable 🤍 Save Syllables: mar-row (2) English Definition A soft fatty substance in the cavities of bones, or a large vegetable. Example Sentence Bone marrow produces blood cells. US IPA /ˈmær.oʊ/ 🔊 Listen US UK IPA /ˈmær.əʊ/ 🔊 Listen UK Synonyms pith essence core substance Antonyms exterior surface Share this Word Facebook WhatsApp X Telegram Copy Link