probe

noun

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

verb

question or examine thoroughly and closely

examine
examine physically with or as if with a probe
“probe an anthill”
dig intopoke into