A surgical mask is used inside the operating room or during other sterile procedure areas to protect the patient environment from contamination. Surgical masks have ties so that they can be adjusted for fit, and are tied over the top of a surgical or bouffant cap.
rockfall. 1  an act or instance of the falling of rock, as in a cave-in or an avalanche. 2  a mass of rocks that have fallen: to be trapped under a rockfall.
Recent Examples of rockfall from the Web. 1  When he was reported missing, a helicopter crew found his body in the rockfall. 2  The Seattle Times reports the man's body was found Thursday in a rockfall area by a helicopter crew after he had been reported missing.