oma 

Grandmother (German, colloquial)informal term of endearment.

I always addressed my German grandparents as "Oma" and "Opa"

oma by Richard of Healdsburg September 17, 2008

oma 

German word for "granny" or "grandmother". Oma sex - pornography involving elderly German women. A German GILF.

If that oma's boobs hung any lower, she would step on them.

oma by Blowfish August 12, 2005

OMA 

the islamic equivalent of OMG( Oh my God)
OMA=Oh My Allah
used in times of great emotion.

OMA! My friend is raping my mother! What to do?
OMA I JUST PWNED THAT TEST!
OMA YOU HAX0R STOP DELETING MY FILES!
OMA I YOU ARE SLEEPING WITH MY GIRLFRIEND!
OMA! Mi amigo esta aprovechando mi papa! QUE LASTIMA?

OMA by [e-mail] May 5, 2004

OMA 

Acronym for "One Man Army". Examples in pop culture include the song OMA by Grand Theft Bus, a Canadian, East Coast 'Indy Rock' band.

I wouldn't want to run into that guy in an alley. He looks like an OMA.

OMA by Chem Eng Milne June 11, 2008

OMA 

OMA is essentially the Pokemon equivalent of OMG, using "Oh My Arceus" instead, considering Arceus is the God of Pokemon.

Oma, I'm in love with the new Black/White starters

OMA by Flintrosexual August 20, 2010

Oma 

A gorgeous girl with a really good heart.

That girl is so amazing... she must be Oma

Oma by bluedo June 13, 2012

OMA 

3/5 of the word omaha. Largest city in Nebraska; located in eastern Nebraska on the Missouri river

I'm from Omaha.

OMA by Kryten 2x4b May 5, 2003