A googlewhack is a lucky hit in an old internet game. You type two words into Google — not a famous pair, not a set phrase — and you hope the search returns exactly one page. That single result is the googlewhack. People did this for fun in the early 2000s, when the web was much smaller. The “whack” is like a sudden hit, a prize. Though actually, the game is far harder now, because Google finds so many pages that two ordinary words almost never stand alone. It is playful computer talk, not everyday English, and not a word you need in class.