line sitter 

a professional who stands in queue so that their client can conveniently get into a big event or restaurant

“i paid a line sitter $30/hour so i could get the best deals on Black Friday”

line sitter by yes juanito yes November 21, 2018

Line Sister 

a girl who pledges a sorority with you. she is generally very close to you and has your back.

Person: Who's that in the picture with you?
Me: That's my line sister! We're inseparable! Love her so much!

Line Sister by spr12 July 25, 2012

Line sister 

A girl whose pledging a sorority with you.

Stacey: Whose that? (indicating Myka)
Amber: Oh, Myka? That's my line sister! Love her. We both became apart of Delta Sigma Theta together.

Line sister by dser July 14, 2011

Line Sister 

your sister who stands in LINE with you while pledging,not chilling in a classroom.

whos tha girl you were talking to?
oh thats gia my LINE SISTER, we put in work for our letters
ohhh okk!!!i see you!

Line Sister by macademianut215 September 20, 2012