oiler

Short definition from Wiktionary

Noun

1. 1
   One who or that which oils: An assistant in the engine room of a ship, senior only to a wiper, mainly responsible for keeping machinery lubricated.
2. 2
   One who or that which oils: Any of various automatic devices for oiling pneumatic tools or other tools.
3. 3
   An oil tanker.
4. 4
   Synonym of oilcan.
5. 5
   Synonym of oilcan: A small (typically thumb-sized) metal container of oil, often containing an integral brush.
6. 6
   Synonym of oil well.
7. 7
   An oilskin coat.
8. 8
   A Mexican.
9. 9
   A sycophant, which is someone who is oily (smarmy).
10. 10
    A heavy drinker; especially, an alcoholic.