'Breastbone' definitions:
Definition of 'breastbone'
(from WordNet)
noun
The flat bone that articulates with the clavicles and the first seven pairs of ribs [syn: sternum, breastbone]
Definition of 'Breastbone'
From: GCIDE
- Breastbone \Breast"bone`\ (br[e^]st"b[=o]n`), n. The bone of the breast; the sternum. [1913 Webster]