silk treated with oil to make it waterproof
[oi-ler] /ˈɔɪ lər/ noun 1. a person or thing that . 2. a worker employed to machinery. 3. any of several devices, other than pressure devices, for feeding lubricating to a bearing. 4. an oilcan. 5. Often, oilers. an oilskin garment, especially a coat. 6. a ship using as fuel. 7. . 8. an . […]
/ˈɔɪlˌfiːld/ noun 1. an area containing reserves of petroleum, esp one that is already being exploited
noun 1. an area in which there are large deposits of oil. oil field An area with reserves of recoverable petroleum, especially one with several oil-producing wells.
/ˈɔɪlˌfaɪəd/ adjective 1. (of central heating) using oil as fuel