breast ‧ bone /ˈbrestbəʊn $ -boʊn/ BrE AmE noun [countable]
a long flat bone in the front of your chest that is connected to the top seven pairs of ↑ rib s SYN sternum
breast ‧ bone /ˈbrestbəʊn $ -boʊn/ BrE AmE noun [countable]
a long flat bone in the front of your chest that is connected to the top seven pairs of ↑ rib s SYN sternum
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012