anthill

noun

Etymology: From Middle English ametehul, amptehille, from Old English ǣmethyll, equivalent to ant + hill.

1. A cone-shaped structure built from sediment and other available materials by ants or white ants (termites), and beneath which the colony nests.

   “On arrival at Edinburgh Waverley, I fight my way through the throngs of tourists and locals turning the place into a human anthill.”