Where does “muscle boy” come from?

muscle boy (English) comes from English muscle, from Middle English muscle, from Old English muscle, from Proto-Germanic *muskulā, from Latin muscula, from Latin mūsculus, from Ancient Greek μῦς, from Proto-Hellenic *mū́s — mouse.

muscle boy (English): A goon, thug, muscular henchman; A bodybuilder,...

Definitions

  1. A goon, thug, muscular henchman; A bodybuilder,...

Ancestry of “muscle boy”, step by step

muscle boy traces back through two separate lines of ancestry.

via English muscle

StepLanguageWordMeaning
1EnglishmuscleA contractile form of tissue which animals use to...
2Middle Englishmusclemussel bivalve
3Old Englishmusclemussel
4Proto-Germanic*muskulā
5LatinmusculaDiminutive of musca
6Latinmūsculusa small mouse
7Ancient Greekμῦςmouse; A type of mussel; A type of whale
8Proto-Hellenic*mū́s
9Proto-Indo-IranianmúHsmouse
10Proto-Indo-Europeanmúh₂smouse

via English boy

StepLanguageWordMeaning
1EnglishboyA young male; A male child: a son of any age; A...
2Middle Englishboyeservant, commoner, knave, boy
3Old Englishbōiaboy
4Proto-Germanicbōjôyounger brother, young male relation
5Proto-Germanicbō-A stem meaning "father, brother, close male...
6Proto-Indo-Europeanbʰā-to say
Every word from Proto-Indo-European múh₂sEvery word from Proto-Indo-Iranian múHsEvery word from Proto-Hellenic *mū́s