Oldsmobile noun4 •A car of this brand.She was a family friend. I remember riding in her car as a child. It was an Oldsmobile and seemed a bit plush and expensive compared with our car.He has a classic Oldsmobile in his garage. It's one of those ones with a huge V-8. •(slang) A lowball hand with a nine and an eight as the two highest cards •(slang) Two pair nines and eights •(slang) A nine and an eight as a starting hand in Texas hold 'em formsOldsmobiles