Definition of "Soil" :

noun: the geographical area under the jurisdiction of a sovereign state

"American troops were stationed on Japanese soil."

noun: material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use)

"Good agricultural soil."

noun: the state of being covered with unclean things

noun: the part of the earth's surface consisting of humus and disintegrated rock

verb: make soiled, filthy, or dirty

"Don't soil your clothes when you play outside!."