n2.American EnglishAmE informal an older woman in a romantic or sexual relationship with a younger man
Examples from the Corpus
cougar• These include the grizzly bear, cougar, wolverine, wolf, coyote, and bald and golden eagles.• In California, cougars routinely are killed when deemed a danger to people or livestock.• Nothing was paved, little was fenced; the forests were full of cougars and the streams full of fish.• The measure is the latest chapter in a long battle over the status of the cougar in California.• In former times the cougar was more abundant than at present...• The cougarprevailed a little longer, though its bounty in Connecticut was last paid in 1769.• The cougar, however, still could be restored.
Origincougar
(1700-1800)Frenchcouguar, from Modern Latincuguacuarana, from Tupisuasuarana, from suasu“deer” + rana“false”