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. / (nautical) An oil tanker. / An oil well.

plural of oiler

(US, Navy) A naval oil tanker with the ability to perform underway replenishment of fuel oil or ship oil to ships of the fleet.

plural of auxiliary oiler

(rail transport) synonym of flange lubricator

plural of flange oiler

plural of oilery

The business or goods of a dealer in oils.