by Abigplatypus October 27, 2020

Where a guy can make a girl orgasm like she’s never felt before so he’s got her in an O-Lock where she’s now madly in love with him and will never leave him over fear of never being able to orgasm like that ever again
Friend 1: “yo bro are you not worried she’s gonna cheat on you?”
Friend 2: “nahhhh fam… I got her in the most secure O-Lock of the century”
Friend 2: “nahhhh fam… I got her in the most secure O-Lock of the century”
by TobygotmeinO-Lock November 15, 2023

King-side castling or short castling, a move in chess consisting of moving the king two squares toward the king-side rook on the same rank and then moving said rook to the square the king passed over. The move cannot be performed if the player is in check, or if the king or the rook in question has already moved. King-side castling is notated O-O.
1. e4 e5
2. Nf3 Nf6
3. Bc4 Bc5
4. O-O O-O
2. Nf3 Nf6
3. Bc4 Bc5
4. O-O O-O
by ronnosexual August 12, 2022

A man whose homeys love him to the degree that they call him their homey-o. Not to be confused with homo.
by tomorrowissunday July 25, 2011

O. Z. stands for being overzealous, a brain disorder. Those afflicted do not know when to stop - planning a party down to the most minute detail, decorating a room or giving an endless stream of gifts on Christmas when a few would more than suffice. Frequently mis-diagnosed in children as industriousness or generosity, by adulthood it's incurable.
"I'll just tidy up", she said, heading for the kitchen, "a few minutes." Hours later she emerged, having rewashed the clean dishes, glasses and cutlery, scrubbed the floor, wiped, re-wiped and sterilized the counters, thrown out loads of perfectly good food to neaten the fridge and arranged their Urban Dictionary mugs in alphabetical order, her O. Z. out of control.
by Monkey's Dad December 29, 2023

by pseudonym No.1 March 3, 2022

S. C. H. O. O. L.
by Bookworm of the dictionary April 17, 2018
