probe in WordNet English dictionary

1. examine physically with or as if with a probe
   "probe an anthill"
   probe  dig into  poke into 
   
2. question or examine thoroughly and closely
   probe  examine 
   

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