sentinel. A person or special body of persons assigned to provide protection or keep watch over, for example: guard, lookout, picket, protector, sentry, ward, watch.
Victrola. Originally, a phonograph from the Victor Talking Machine Company, Camden, NJ, but it eventually became more of a generic term for any brand of phonograph.
Centella asiatica (Gotu Kola) is a traditional medicine mainly renowned for its cognitive enhancing properties (usually alongside Bacopa monnieri) and its ability to regenerate wound healing. It appears effective on both parameters in preclinical evidence, and may also be anti-rheumatic.