Pronunciation (UK) IPA (key): /hɑːθ/ (US) IPA (key): /hɑrθ/ Audio (US)(file) Noun Singular hearth Plural hearths (countable) A hearth is the place in a home where a fire is kept for heating and for cooking. (countable) A hearth is a fireplace.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads