portal combat n.— «Egosurfing, the popular pastime of surfing to find your own name in cyberspace, has acquired a cutthroat cousin: portal combat. Where once you could claim a certain status simply by appearing online, today’s Internet...
puffer machine n.— «In airports with puffer machines, passengers are asked to step into a portal as they approach security. Once inside, jets of air blow in rapid sequence to dislodge trace particles from the passenger’s clothes and skin...