the.com/moat
a giant water trap proving the best defense is making attackers walk slower
not just waterSome held spikes, sewage, or hungry crocodiles
dry optionDry moats worked fine—just deep, awkward ditches
business slangWarren Buffett calls competitive advantages an economic moat
anti-tunnelWater-filled moats stopped enemies from digging underneath
toilet dutyMany doubled as the castle's open sewer