trench boot
noun1
A boot designed to stand up to the wet, muddy conditions of trench warfare.
- Besides, whilst he had been in hospital, practically the whole of his equipment had disappeared from his kitbag – including Sylvia's two pair of sheets! – and he had no money with which to get more. He had not even any trench-boots.1925, Ford Madox Ford, No More Parades (Parade's End), Penguin, published 2012, page 371: