probe (n.) Look up probe at Dictionary.com
early 15c., "instrument for exploring wounds, etc.," also "an examination," from Medieval Latin proba "examination," in Late Latin "a test, proof," from Latin probare "show, demonstrate; test, inspect; judge by trial" (see prove). Meaning "act of probing" is 1890, from the verb; figurative sense of "penetrating investigation" is from 1903. Meaning "small, unmanned exploratory craft" is attested from 1953.
probe (v.) Look up probe at Dictionary.com
1640s, originally figurative; "to search thoroughly, interrogate;" from probe (n.) and partly from Latin probare "show, demonstrate; test, inspect." Physical sense of "to examine with a probe" is from 1680s. Related: Probed; probing; probingly.