This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. A long flat bone in most vertebrates that is situated along the ventral midline of the thorax and articulates with the ribs. The manubrium of the sternum articulates with the clavicles in humans and certain other vertebrates. Also called breastbone.

n. The breastbone.

n. A plate of cartilage, or a series of bony or cartilaginous plates or segments, in the median line of the pectoral skeleton of most vertebrates above fishes; the breastbone.

n. The ventral part of any one of the somites of an arthropod.

n. The breast-bone of man and many other vertebrates; a bone or longitudinal series of bones in the middle line of the ventral aspect of the body, chiefly in its thoracic section, completing the thoracic wall by articulation with more or fewer ribs, or elements of the scapular arch, or both: theoretically, in Owen's system, the hemal spines of a series Of vertebræ.

n. In arthropods, as insects and crustaceans, a median sternal or ventral sclerite of any somite of the cephalothorax, thorax, or abdomen; a sternite: the opposite of a tergite or notum.

n. the flat bone that articulates with the clavicles and the first seven pairs of ribs

"Others may have weighed whether to wear a polo, V-neck, scoop neck or button-down if lanyard chafing around the neck or on the sternum is a concern."

os    bone   

sternum collare    antennary sternum    cephalic sternum    sternum pectorale    bone   

sternal   

sterna   

breastbone   

clavicle    collarbone    scapula    breastbone    pelvis    sacrum    groin    vertebra    perineum    midsection