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1.
a common hard working man or person.
The farmer that loved his land but barely fed his family was the salt of the Earth.
by sarah January 02, 2004
 
2.
Jes' folks; the 36 saints who uphold the world; ordinary people. See the song by the Rolling Stones. Origin in the New Testament.
Say a prayer for the hard-working people. Say a prayer for the salt of the earth.
by octopod November 30, 2003
 
3.
When a penis-yielding man or person emits cum onto the ground outside.
"Watch out, there's some salt of the earth where you're about to walk"
by saltoftheearth November 16, 2011