probe

(noun) an inquiry into unfamiliar or questionable activities. Synonyms: investigation. Example: "There was a congressional probe into the scandal."

(noun) a flexible slender surgical instrument with a blunt end that is used to explore wounds or body cavities.

(noun) an exploratory action or expedition.

(noun) an investigation conducted using a flexible surgical instrument to explore an injury or a body cavity.

(verb) question or examine thoroughly and closely. Synonyms: examine.

(verb) examine physically with or as if with a probe. Synonyms: dig into, poke into. Example: "Probe an anthill."