Both Uses

Dutch
in
The House on Mango Street
(Auto-generated)

She teaches us to cross and uncross our legs, and to run like a double-dutch rope, and how to walk down to the corner so that the shoes talk back to you with every step.†
Chpt 17
She has the idea, though she's having trouble keeping her end of the double-dutch steady.†
Chpt 20 *

Definitions:

(1) (Dutch)
the people of the Netherlands (including Holland); or relating to them (including the name of their language)

Many people refer to the Netherlands as Holland -- which is more accurately the most populous region of the Netherlands. The Netherlands is best known for having 25% of its land below sea level.
(2) (meaning too rare to warrant focus)
Less commonly, Dutch is used in a the phrase Dutch oven (a thick-walled cooking pot with a tight-fitting lid) or Dutch doors (a door divided in such a fashion that the bottom half may remain shut while the top half opens).