(Noun) A cougar so fierce that their prey are under 18.
(Verb) Dating a male under 18 while being a cougar.
That substitute was a total cougaphile, she seriously asked Jimmy out on a date.
He's dating a 40 year old cougaphile?!?!
Demi totally cougaphiled that kid.
A cougar that is preying on jailbait.
College Student 1: Dude that werewolf in Twilight is fucking hot.
College Student 2: You do realize he's like 16.
College Student 1: I think that makes me a cougaphile.