Opa 

Dutch word for "grandpa".

I call my dutch grandfather 'Opa' because he doesn't like being called anything else.

Opa by bunnygoesboom July 1, 2005

Opa 

A Word Used To Describe Excitement at a joyous event.

"It's A Boy!" "Opa!Cigars For All!"

"Would You Like To Make-Out In The Back Of My Camaro?" "OPA!"

Opa by Mat H. April 12, 2006

Opa 

A word Greeks scream when they smash plates

*crash* OPA!!!!

Opa by Area 51.0 March 4, 2017

OPA 

Outer Planets Alliance. Loose coalition of citizens of the asteroid belt, and outer planetary moons ("belters") from the books and TV series of The Expanse. They tow the line between fledgling government and terrorist organization.

There's OPA and then there's OPA.

OPA by Shaytan January 1, 2017

opa 

Opa is a word used by people from the Balkan countries (Greece, Bosnia-Herzegovina, Serbia, Crotia etc.) to express great joy over something.

"- This party kicks ass

- It sure does! C'mon now, opa!!!"

opa by Jugoslav September 11, 2011

Opa 

Greek for, "Oh my God! Your cheese is on fire!"

Cried out in Greek restaurants every time the saganaki (flaming cheese appetizer) is ignited at someone's table.

The server lit the saganaki and shouted, "Opa!" along with everyone at the table.

Opa by TinLizzy March 29, 2009

Opa 

Grandfather

Opa and Oma sent me a check for $5.00 on my birthday.

Opa by Sunflowergrl October 9, 2010