Icy coating is a term used to describe a thin layer of ice that forms on surfaces due to condensation or freezing rain. HOAR, RIM, RIME, and GLAZE are all words used to describe this type of coating. HOAR is a four-letter word meaning frosty or white with age. RIM is a three-letter word meaning the outer edge of something. RIME is a four-letter word meaning a white deposit of frozen water vapor. GLAZE is a five-letter word meaning a thin layer of ice or glass-like substance. All of these words can be used to describe an icy coating.