bone · noun C or U /boʊn/
bone
B1 one of the hard pieces that make the structure inside a human or animal
Dictionary examples:
The X-ray showed a broken bone in his left hand.
There's still a lot of meat left on the bone - should I slice some off for you?
Learner example:
I saw things like dinosaur bones, mummies, etc. (Preliminary English Test; B1; Korean)
a bone of contention
C2 something that people argue about
Dictionary example:
Housework is a major bone of contention in our house.
Learner example:
Prices have always been the bone of contention among the managers. (Certificate of Proficiency in English; C2; Greek)