A Cougar is:

• an animal, the Puma
• a helicopter type, the Eurocopter Cougar, with the civilian counterpart called Eurocopter Super Puma
• an armored military vehicle, the Cougar Hardened Engineer Vehicle, HEV [1]
• an armored fighting vehicle used by Canadian military, AVGP Cougar
• an alcoholic drink

cougar/coug (2) (slang)

• an older, divorced woman looking for companionship with a significantly younger man.(archaic) [2]
• A financially independent woman who can afford to keep a younger man.(modern)