Jill 

A slang word for female masturbation. As opposed to a male "Jack off", A woman is "Jill off".

Shiela said she's going home to study, but she goes home everyday after school to jill off

Jill by KittyWithKlaws February 19, 2009

Jill 

A cool but crazy girl that likes to sing or dance to akon.She also is inspiring to her friends and loves to write notes in a journal for her friends.

Bob: Hey is that Jill over there?
Bobbet:Yes she's the only one that dances to Akon.

Jill by Crazy women December 13, 2008

jill 

mug prick idiot muppet arsehole fool wanker

that geezers a fucking jill

jill by samson06 October 3, 2006

Jill 

She is the bestest friend everrrr
She is a strong independent woman that doesn’t need no man
She thinks she is thiccccc af
She loves animals

Boiiii: want to go out
Jill: leave me aloneeee looser

Jill by Hdgsgsjshdvsvdhj June 4, 2019

Jill 

This is either the right back hand or the left palm when being used for self pleasuring purposes

No girl knows how to get me off quite like Jill does.

Man, last night after the band recital i got tons of action, Yah, me and Jill hooked up

Jill by anonymous64123 February 18, 2010

Jill 

Guys jack off, Girls jill off.

Because no one is really named "Jill"

ANYTHING with "jill";

"...going shopping with my friend jill."
"...talking to jill"
"...texting jill"
etc

Jill by MoishB November 27, 2007

jill 

the girl with brown curly hair and huge tits

Senior one: "Did you see Jill today? Man.. that shirt she was wearing..."
Senior two: "And she wonders why her nickname is 'freshman with big-tits...' haha"

jill by uhohhotdog July 16, 2008