Luscious means:
* Delicious and pleasing to the taste: "The cake was luscious, with a rich chocolate filling."
* Pleasing to the senses: "The lush, green fields were a luscious sight."
* Attractive and appealing: "She had luscious red hair and piercing blue eyes."
So, "lucious" doesn't have a meaning on its own. It's just a misspelling of a commonly used word!