Tater/ˈteɪtər/ Definition 1 of 2Pro Tip 1/3Casual Language Used in relaxed, informal situations or conversation, often with friends or family. Let's grab a tater and make some fries. Pro Tip 2/3American Slang Commonly used in American English as a slang term, more widely recognized there. At the cookout, we had taters with every dish. Pro Tip 3/3Friendly Tone Possesses a cozy and familiar tone, which can make the speech sound more personal. Mom's making her famous baked taters tonight!