[syn: oil tanker, oiler, tanker, tank ship]
The Collaborative International Dictionary of English v.0.48:
Oiler \Oil"er\, n.
   1. One who deals in oils.
      [1913 Webster]
   2. One who, or that which, oils.
      [1913 Webster]
   3. An oil tanker.
      [PJC]
   4. A ship which is powered by oil.
      [PJC]
   5. An oilcan.
      [PJC]
WordNet (r) 3.0 (2006):
oiler
    n 1: a worker who oils engines or machinery
    2: a well that yields or has yielded oil [syn: oil well,
       oiler]
    3: a cargo ship designed to carry crude oil in bulk [syn: oil
       tanker, oiler, tanker, tank ship]