noun,pluralhoa·gies.New Jerseyand Pennsylvania(chiefly Philadelphia ).
a hero sandwich.
Origin of hoagy
1965–70,Americanism; a number of anecdotal hypotheses have been advanced as to the orig. of the word, most claiming it to be derivative of hog, either in reference to pork as an ingredient, or as an epithet for a person capable of eating such a sandwich, or alluding to Hog Island, an industrial and shipping area of South Philadelphia; but corroborating evidence is lacking; see -ie
American English (originally Philadelphia) word for "hero, large sandwich made from a long, split roll;" originally hoggie (c.1936), traditionally said to be named for Big Band songwriter Hoagland Howard "Hoagy" Carmichael (1899-1981), but the use of the word pre-dates his celebrity and the original spelling seems to suggest another source (perhaps hog). Modern spelling is c.1945, and may have been altered by influence of Carmichael's nickname.