heart noun Stress: first syllable 🤍 Save Syllables: heart (1) English Definition The hollow muscular organ that pumps blood through the circulatory system. Example Sentence His heart was beating fast. US IPA /hɑːrt/ 🔊 Listen US UK IPA /hɑːt/ 🔊 Listen UK Synonyms soul core center mind Antonyms edge periphery Share this Word Facebook WhatsApp X Telegram Copy Link