wattle and daub

wattle1(1) covered with mud or clay and used, esp formerly, as a building-material for walls and roofs 泥笆墙（尤指旧时的）.

waterfall, waterfront, watering-can, watering-place, waterless, waterlogged, Waterloo, waterman, watermark, waterproof, watershed, waterside, waterspout, watertight, waterway, waterworks, watery, watt, wattage, wattle, watts, wave, wave sth. away, waveband, wavelength, waver, waverer, waveringly, waving, wax, waxen, waxiness, waxwork, waxy, way, way-bill, way-out, wayfarer, wayfaring, waylay,