cougar UK /ˈkuːɡə/US /ˈkuɡɚ/ noun2 •(US, Canada) A wild feline, of species Puma concolor, native to the Americas.The Cougar has entirely disappeared, or is very rarely met with. This animal was about the size of the wolf, of a gray color, strong, active, fierce and untameable. — 1831 •(slang, offensive) An older woman who actively seeks the casual, often sexual, companionship of younger men, by implication a female “sexual predator”.A cougar approached Warren at the Palomino Club and asked for a dance. formscougars