Definition of: probe

(prōb) v. probed, prob·ing v.t.
1. To explore with a probe.
2. To investigate or examine thoroughly.
—v.i.
3. To penetrate; search.
—noun
1. Med. An instrument for exploring cavities, the course of wounds, etc.
2. That which proves or tests.
3. U.S. An examination; a searching investigation or inquiry, especially into crime.
4. A space probe. [<L probare <probus good, proper. Doublet of PROVE.]
—prob′er noun