Variant of hot dog
- Informal a frankfurter or wiener, esp. one served hot in a long, soft roll, with mustard, relish, etc.
- Slang an exclamation used to express delight
Origin of hot dogorigin, originally (?) so called (c. 1900) by T. A. Dorgan, United States cartoonist (died 1929), probably in allusion to popular; population notion that the sausage was made of dog meat