Share this entry

breastbone Syllabification: breast·bone
Pronunciation: /ˈbres(t)ˌbōn/

Definition of breastbone in English:


A thin, flat bone running down the center of the chest and connecting the ribs. Also called sternum.
Example sentences
  • To get to your heart the surgeon makes an incision down the middle of your chest and separates your breastbone.
  • The heart is a hollow, muscular organ that lies in the center of the chest under the breastbone.
  • All the blood cells are formed in the marrow of the flat bones such as the skull, breastbone and pelvis.

Words that rhyme with breastbone


Definition of breastbone in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day coiffeur
Pronunciation: kwäˈfər
a hairdresser