hot dog (iou)

hot dog adjectival & noun phr. Also hot-dog. L19.
[from HOT adjective + DOG noun.]
A. adjectival phr. Outstandingly good, first-rate. Also as interjection, expr. delighted approval. N. Amer. slang. L19.
b. noun phr.
A person outstandingly proficient in a sport etc., esp. one who gives a flamboyant display of his or her skill. N. Amer. slang. E20.
A hot frankfurter sandwiched in a soft roll. E20.