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.
Toprock is a major element of b-boying and b-girling. It generally refers to foot movement performed from a standing position, relying upon a mixture of coordination, flexibility, rhythm, and most importantly, style. It is usually the first and foremost opening display of style, and it serves as a warm-up for transitions into the more acrobatic maneuvers of downrock. Breakers may devote considerable time to developing their toprock, and the style they display is a point of pride.