A Jyline is an extremely well defined jaw
line, common in
handsome people, celebrities, and rich west coast private school attendees.
"Holy
cow that Tom Cruise has a stunning jyline!"
"Once I realized I had a jyline, I quit my day
job and started banging hot babes all day long!"
"
Sarah, get a load of that hot Jyline! I want it in me!"