- 1probe (into something) (used especially in newspapers) a thorough and careful investigation of something a police probe into the financial affairs of the company Arson probe after three die at home
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- 2(also space probe) a spacecraft without people on board that obtains information and sends it back to earth
- 3(technology) a long, thin, metal tool used by doctors for examining inside the body
- 4(technology) a small device put inside something and used by scientists to test something or record information
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