oiler noun. ['ɔɪlǝ] ME.
[from OIL noun, verb + -ER¹.]
1. A maker or seller of oil. Long rare. ME-E19.

2. A person who oils or lubricates with oil. M19.

3. A device for oiling machinery; spec. an oilcan. M19.

4. In pl. Oilskin garments, an oilskin suit. colloq. (orig. US). L19.

5. An oil well. US colloq. L19.

6. A vessel or vehicle transporting oil. L19.

7. A vessel or vehicle using oil as its fuel; an oil engine. E20.

[TahlilGaran] English Dictionary ▲