For @TheBigTater and all of those that agree with mePretty sure HS stands for horse shoes now...
To all that do not I offer the following
My answer would be no by definition.
Acronym - noun
1.a word formed from the initial letters or groups of letters of words in a set phrase or series of words and pronounced as a separate word,as Wac from Women's Army Corps, OPEC from Organization of Petroleum Exporting Countries, or loran from long-range navigation.
Horseshoe is one word so Horseshoe Casino Cleveland or Cincinnati should be HCC.
Hot Stamp is two words so could use HS as its acronym.
Mic Drop!!!
David O