IPA: /ˈkætəˌplæzəm/
KK: /kætəˌplæzəm/
A soft, moist mass applied to the body to relieve soreness or inflammation.
The doctor recommended a cataplasm to help soothe the patient's aching muscles.
Cataplasm → It is formed from "kata-" (meaning down) and "plasma" (from Greek "plasma", meaning something molded or formed). The word refers to a substance applied down onto a part of the body, typically for medicinal purposes.
Think of applying something 'down' ('kata-') onto the skin, as a 'molded' treatment ('plasma') for healing.