eat (one's) greens(redirected from eating their greens)
eat (one's) greens
To eat one's vegetables. Commonly used as an imperative, as by a parent to a child. Come on now, you won't get any dessert unless you eat your greens. Now that I'm an adult, I'm a lot better about eating my greens than I used to be.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.