Other forms: collarbones
The collarbone is the long thin bone between the shoulder and the throat. You can trace it with a finger.
Doctors call it the clavicle, and it is one of the most commonly broken bones in the body, since it takes the force of any fall onto an outstretched arm. Cyclists break it constantly. It is close to the surface, which is why it shows clearly on a thin person and why a break is easy to see. The word is one word and describes exactly where a collar sits.
1nouncollarboneThe bone joining the breastbone to the shoulder blade.
“He broke his collarbone coming off the bike.”
Middle English
colar bane
English, today
collarbone
From Middle English colar bane; equivalent to collar + bone.
Etymology from Wiktionary, CC BY-SA