This is the opposite of the male "jacking off", a girl masturbating can be referred to as Jilling On.
Jon: "Dude I just caught some girl jilling on in the bathroom!"
Brian:"Wow I love co-ed bathrooms!"
Robcat:"Did she really Jill On? thats hilarious!"
by B-dizzle and J Bird April 22, 2010
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Jill is a special girl. You think she knows nothing but she knows everything. Although she is nosy and bossy sometimes, she knows how to handle a situation in a kind attitude. She knows how to end and win an argument. She is nice at most times but if you mess with her heart, it may be hard to get her back. Jill is the type of girl who doesn't have much friends, but the friends that she does have, she makes a huge impact in there life. If you ever find a Jill in your life, make sure you keep her in your heart. Make sure you don't forget her. And definitely make sure you don't break her. You will regret letting her go. She is independent. She is brave. She is loving. She is caring. She knows how to say no.
"I wish I had someone in my life to love who is strong and loving at the same time."
"Get a Jill!"
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"You girls keep on Jilling until everyone sleeps on a wet spot!"
by advocates diaboli March 17, 2017
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female masturbation

the female equivalent of jacking off is jilling off.
Example: I was bored at home, and my boyfriend was out of town, so I started jilling off.
by goodvibration November 13, 2007
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The female version of jacking off derived from Jack and Jill. Jack for the boys, Jill for the girls.
I walked in on Marina jilling off while she was watching porn. I'm not sure whether she was extremely startled at the disturbance, or if she jilled her panties! It was so loud.
by DieselBoy July 18, 2013
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Is the name your hand makes.
Just for your thumb and index. Middle is i. Ring and pinky is the 2 L's. Now you will never be alone because you will always have jill.
by urbanwolf92 January 29, 2016
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A smart sassy, independent woman who often makes others jealous of her wit, good looks and charm.

If you can get over your jealousy and get to know her, she will be the best person you've ever met.
Someday, if I work really hard, i can be like Jill.

If you look up charisma in the dictionary, there's a picture of Jill.
by coolnesssupreme February 3, 2010
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