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# breastbone

«breastbone» in Mova's school dictionary: **The long flat bone in the middle of the chest, joining…** — its meaning for a pupil, its sense in the lessons and examples, with 1 sentence of Mova's corpora that use it.

### part of speech

noun (a breastbone, breastbones)

### meaning for a pupil

1) The long flat bone in the middle of the chest, joining the ribs at the front; its scientific name is the sternum. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/breastbone/#m1)

2) The same bone in a bird, where its flying muscles are fixed. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/breastbone/#m2)

### sense in the lessons

In science lessons on the skeleton it is labelled as the sternum; it protects the heart and lungs together with the ribs. In first aid, chest compressions in CPR are done on the lower half of the breastbone. Phrases: the breastbone, behind the breastbone.

### examples

- Your ribs join your breastbone at the front. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/breastbone/#x1)
- The scientific name for the breastbone is the sternum. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/breastbone/#x2)
- In CPR you press down on the lower half of the breastbone. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/breastbone/#x3)
- A bird's breastbone has a big ridge for its flight muscles. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/breastbone/#x4)
- The heart sits just behind the breastbone, a little to the left. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/breastbone/#x5)
- Label the breastbone on the skeleton diagram. [tree →](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/breastbone/#x6)

### note

Countable, one word. Scientific term: sternum. Only learn CPR from a trained first-aider; never practise it on a real person.

### In the corpora

- [A bird's strong flight muscles are fixed to a keel on its breastbone.](https://md.mova.elamur.ai/free/en/corpora/school/world/73-birds-feathers-nests-flight/10/)

### Trees and pragmatics

[Every meaning and example of «breastbone» parsed by Mova](https://md.mova.elamur.ai/free/en/corpora/dictionaries/school/B/breastbone/), each sentence with its dependency tree and frames.