What is the meaning of the word "rakish"?

Definitions:

Having a dashing, stylish, and slightly unconventional look, often suggesting charm or confidence. ADJECTIVE
- He wore his hat at a rakish angle, adding to his devil-may-care attitude.
In nautical context, refers to ship's lines or angles, describing a sleek and steamline design that gives an appearance of speed and elegance. ADJECTIVE
- The rakish design of the yacht turned heads as it sailed into the harbor.
Suggesting a morally unconventional or slightly disreputable lifestyle, often with a charming or carefree demeanor. ADJECTIVE
- She admired his rackish charm, even though she knw he was trouble.