overshoe
From Longman Dictionary of Contemporary EnglishRelated topics: Clothesovershoeo‧ver‧shoe /ˈəʊvəʃuː $ ˈoʊvər-/ noun [countable] DCCa rubber shoe that you wear over an ordinary shoe to keep your feet dryExamples from the Corpusovershoe• The maid helped her take off her overshoes.• He grunted guardedly, as he heaved off his overshoes.• The standard pressure suit came with shoes, but for walking on the Moon a lunar overshoe was made for each astronaut.