billow /ˈbiləu/ I. n.［c］巨浪，波浪般滚滚向前的东西：Billows of smoke blown across the road by the wind made my eyes water.被风吹过路面的滚滚浓烟使我泪流满面。‖II. Ⅱ. vt. & vi.（使）翻腾，汹涌：flags billowing in the breeze在风中飘扬的旗帜；the billowing dust滚滚烟尘