The definition of a mountain is a part of Earth that is very wide, has a taller height than a hill and often has steep sides, or it is a large pile of something.
An elevated tract of more or less level land; tableland; mesa
A long mountain range on the ocean floor.
Relating to or characteristic of low, usually level land.
Find another word for highland. In this page you can discover 18 synonyms, antonyms, idiomatic expressions, and related words for highland, like: mountain, upland, plateau, ridge, uplands, high-country, lowland, highlands, shetland, lochaber and orkney.