big back 

A girl with a big ass / booty.
Context:
British slang / grime and trap music.

Man wants a gyal with a big back.

big back by Agrith July 5, 2016

big back 

big back is the London slang for a big booty

Girl: So, what kind of girls are you into?
Guy: I like a girl with a BIG back! 😍

big back by vvxvy June 26, 2016

Big Back 

A big back refers to someone's back area and there thiccccc ass

Yo ur girls got a big back u know I would clap that

Big Back by Demane March 30, 2020

Big back 

Is what every mandem wants. For an example ciara got a big back and Shona everyboy wants that but ciara is a bonus because she’s leng and her body is spectacular

Look at Ciara with her big back

Big back by krumzy.y January 2, 2020

Big Back 

Big back is when a person’s back is overly large.

James eats a lot so we call him big back

Big Back by thebiggest back October 18, 2023

Big back 

An annoying person who is a fatty and always eating out

“Your such a big back”
“That’s why you a ugly big back smd “

Big back by Tiffanydaboss November 20, 2023

Big back 

Big back is basically towards heavy set mfs..notice how there back is wider than others

Keisha look at that big backed girl over there.She the one who stole my honey bun Thursday.

Big back by Jeala henderson December 2, 2023