(1):
(v. t.) Fig.: to search to the bottom; to scrutinize or examine thoroughly.
(2):
(n.) An instrument for examining the depth or other circumstances of a wound, ulcer, or cavity, or the direction of a sinus, of for exploring for bullets, for stones in the bladder, etc.
(3):
(v. t.) To examine, as a wound, an ulcer, or some cavity of the body, with a probe.