Mack
来自Big Physics
late 19th century (in sense ‘a pimp’): shortened from mackerel ‘pimp’, or directly from French maquereau .
wiktionary
Clipping of mackerel(“pimp”)
Clipping of mackintosh
Blend of mast + stack
etymonline
Mack
proprietary name for a brand of heavy automobile trucks, named for brothers John M., Augustus F., and William C. Mack, who established Mack Brothers Company, N.Y., N.Y., in 1902. Their trucks have been formally known as Mack Trucks from 1910.