crook and nanny noun2 •A very small place.There's a building in St. Louis called the MEPS Building where doctors probe every crook and nanny of your body to see if you're physically fit enough to join the military. — 2008 •(rare) Average person or people.For the currency of the lives of most us, the fashion in the business of the state has been to expand farther and farther into every nook and cranny, seeking the welfare of every crook and nanny. — 1995 formscrooks and nannies