An expression of joy or happinness that you usually find most people using on MSN, ICQ, or any online forum except with 0s as os..
Now being used as an actual word.
An expression used by sailors in the Canadian navy during WWII to describe a babe who had the goods. Typically used while on shore leave, it was an imitation of a ships klaxon horn alert sound.
Sailors walking down a street in harbour as a dame walks by;
Woot! says one and another says "I'll say"!