Noun
megachain (plural megachains)
A very large and successful chain (group of stores or businesses).
A legacy business still transitioning from print to digital — and now owned by a megachain with lots of new debt to pay off — is competing with a debt-free, digital-only, deep-pocketed operation bent on growth. Source: Internet
Walmart stops selling guns and locking up black hair care products: The megachain removed firearms and ammunition from some store floors after several days of nationwide protests. Source: Internet