Some coworkers and I were recently discussing the word "haulier" and wondering about it's etymology. It sounds like an odd usage. One who "carries" is a "carrier", and (in the US), one who "hauls" is a "hauler". Using the carry/carrier example, "haulier" should come from "hauly" or something similar. Obviously it doesn't. Similarly, one who "sails" is a "sailor", not a "sailior". "Haulier" is the more common form in the UK, so I assume it's also the older usage. Anyone know where it comes from?