To deeply and uncontrolably miss something or someone, usually a man/woman or a drug.
Baby, I've been fiening for you all day!
Man you need to pass that shit, I'm fiening like a motha fucka over here.
by Nikki D. June 15, 2007
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-“Nigga you see that crack head over there?”
-“Yuh she the biggest fien in da hood.”
by satan...:( June 18, 2018
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Fien: a person who is in need of something they crave/ are addicted too.
Lisa is a fien for crack.
Lisa is fiening to smoke crack.
by xelm February 16, 2018
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A teenager who is addicted to nic vapes like Juul or Sourin. It is usual occurrence for fiens to ask everyone they know if they have pods. Also it is not rare for a fien to give the pod mans cream stick a little tug for a few hits before class in the juul room.
“Yo Carly such a fien bruh, she hella just jerked of Jason for a pack of mango pods.”
by Brickitybracketybitch October 14, 2018
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obsessing over someone you used to like or like and cant have that person
yo im fiening over Jose
Fabian keeps texting me he really fiening
by @bluntswit June 08, 2017
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Most beautiful girl you will ever meet. Watch out she has claws, but they are usually tucked away and hidden underneath the beautiful body she has. They are rather popular and get along with many. Fienes have raspy voices that will make your heart melt.
Fiene is soooo fierce

Fiene just invited me to a sleepover, i am honored
by rhondatheengineer March 17, 2017
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