The term "grass-field" refers to a vast plain area covered with grass. It is a very common definition, but there are numerous other similar options. Synonyms for "grass-field" can vary depending on context, location, and use, but some of the most commonly used include meadow, pasture, prairie, savanna, steppe, plain, and range. Each of these synonyms helps to describe a location covered in lush greenery, filled with various kinds of grass and other vegetation. Whether you're looking for a more poetic way to describe a picturesque countryside or want to differentiate between various grass-covered terrains, there are plenty of options to choose from.