Noun

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

Verb

• S: (v) probe, examine (question or examine thoroughly and closely)
• S: (v) probe, dig into, poke into (examine physically with or as if with a probe) "probe an anthill"