ost 

An ostentatious way of saying 'ostentatious', ironically.

Wow, those big celebrity glasses are just, like, so ost!

ost by ahd August 6, 2007

ost 

An act of plagiarism and claiming it as your own.

Wow dude you just totally OSTed that essay from the Internet.

ost by KoolKats99 July 23, 2016

OST 

Orignial Super Teenagers

Friend: Hey what are you watching?
Me: OST
Friend: So childish.

OST by ColaDestroyer69 January 30, 2017

ost 

office space talk, like Yeaaaah, or I need you to come in tommarow , could include listening to rap in your car with windows rolled up, and sure to be rolled up. if someone askes for the stapler to say the swingline is over here.

hes boiling get him his swingline. cut out that ost. ost- referring to the stapler. the building could burn down.

ost by frameshift September 30, 2018

Ost 

A loser with no friends and eats waaaaaaaaaaaaaay to much cheese

That ost at the party the other day was soooooo annoying

Ost by Kosta me man July 25, 2020

Ost 

Ost

I like ost

Ost by Cheesy_ost January 25, 2021

ost 

The simplified version of saying O-S-T or original soundtrack

What music are you listening to? - Oh just the ost to my all time favorite game, Bookworm Adventure Deluxe

ost by anonymous April 17, 2021