Meaning: Driven by lust; preoccupied with or exhibiting lustful desires. Synonyms: lascivious; libidinous; lewd; lustful. Context example: libidinous orgies. Similar: sexy (marked by or tending to arouse sexual desire or interest)
The definition of a rudder is a moveable flat and wide piece of wood or metal used for steering or directing. An example of a rudder is what helps an aircraft direct its course from left to right. a broad, flat, movable piece of wood or metal hinged vertically at the stern of a boat or ship, used for steering.
The answer in all three cases is that rudder is used to help maintain stability in the roll. A little rudder at just the right time can help keep the nose up in a slow roll or even an aileron roll, as the plane rotates through the sideways portions of the roll when gravity is otherwise not countered.