Definition of foreign body in English:

foreign body

Syllabification: for·eign bod·y

noun

An object or piece of extraneous matter that has entered the body by accident or design.
More example sentences
  • A general anaesthetic can interfere with the body's natural cough reflex, which normally helps prevent foreign bodies entering the breathing system.
  • Nature has provided glands that produce wax to keep foreign bodies like insects from entering the ear.
  • The DNA then starts making proteins that are recognised by the body as foreign bodies and attacked.

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