A model of Ford automobile.

(surgery) A medical instrument used to explore wounds and organs, and it can also refer to a fictional instrument used by aliens on abducted humans.

(figurative) Something which penetrates something else, as though to explore; something which obtains information.

An act of probing; a prod, a poke.

(figurative) An investigation or inquiry.

(aeronautics) A tube attached to an aircraft which can be fitted into the drogue from a tanker aircraft to allow for aerial refuelling.

(sciences) A small device, especially an electrode, used to explore, investigate or measure something by penetrating or being placed in it.

(astronautics) A small, usually uncrewed, spacecraft used to acquire information or measurements about its surroundings.

(game of Go) a move with multiple answers seeking to make the opponent choose and commit to a strategy

(biochemistry) Any group of atoms or molecules radioactively labeled in order to study a given molecule or other structure

(transitive, intransitive) To explore, investigate, or question

(transitive) To insert a probe into.