probe

noun
Any of various medical instruments used to explore wounds, organs, etc.Something which penetrates something else, as though to explore; something which obtains information.An act of probing; a prod, a poke.An investigation or inquiry.A tube attached to an aircraft which can be fitted into the drogue from a tanker aircraft to allow for aerial refuelling.A small device, especially an electrode, used to explore, investigate or measure something by penetrating or being placed in it.A small, usually unmanned, 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 strategyAny group of atoms or molecules radioactively labeled in order to study a given molecule or other structure

verb
To explore, investigate, or questionTo insert a probe into.