leave (something) on the table
v. phr.— «Even a car straight from the factory will run differently with computer tuning—especially if it is a performance-oriented model like the Mitsubishi Lancer Evolution or the Subaru Impreza WRX STi, equipped with beefy hardware like a turbocharger. “They’re so aggressively prepared from the factory,” said David Vespremi, who wrote “Car Hacks & Mods for Dummies.” “And yes, they left a little bit on the table. And that little bit is often what you get from tuning.”» —“Need a Tuneup? Become a Hacker” by Seán Captain New York Times Oct. 25, 2006. (source: Double-Tongued Dictionary)
Further reading
Imagine telling someone how to get to your home, but without using the name of your street, or any other street within ten miles. Could you do it? We take street names for granted, but these words are useful for far more, like applying for a job or...
If you speak a second or third language, you may remember the first time you dreamed in that new tongue. But does this milestone mean you’re actually fluent? And a couple’s dispute over the word regret: Say you wish you’d been able...