Nouns

(n)probe, investigationan inquiry into unfamiliar or questionable activities“there was a congressional probe into the scandal”
(n)probea flexible slender surgical instrument with a blunt end that is used to explore wounds or body cavities
(n)probean exploratory action or expedition
(n)probean investigation conducted using a flexible surgical instrument to explore an injury or a body cavity

Verbs

(v)probe, examinequestion or examine thoroughly and closely
(v)probe, dig into, poke intoexamine physically with or as if with a probe“probe an anthill”