Short stand for "Original Sound Track".

-Recorded music accompanying and synchronized to the images of a motion picture, television program or video game
-A commercially released soundtrack album of music as featured in the soundtrack of a film or TV show
-The physical area of a film that contains the synchronized recorded sound.
Guy1: hey Guy2 i just got the OST "The Eye of the Tiger" from the movie Rocky III to my iPod.

Guy2: cool Guy1, let me listen to it.

by netoxic January 23, 2009
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To overcome seemingly unsurmountable odds surprising everyone around that person.
Jose pulled off an Osting yesterday at the game.
by Gameness March 2, 2007
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anyone with the name/last name Oste is the most caring, amazing, beautiful person on the earth. they always are there for you and you can tell them anything.
by davian haines October 17, 2020
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To undo, take back or recall, change one's mind
1) I'm so glad I could ost that sext I accidentally sent to my dad!

2) Did you ost that email to Jake?

3) I'm so glad I osted that tweet before the media storm.

4) By osting the text message, Tom avoided an extremely awkward encounter with his boss.
by On Second Thought March 27, 2015
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Oh noes Ole! Your hode looks like en ost!
by bobolamedbukkake October 30, 2004
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