What does GROUNDS mean?

noun

1. your basis for belief or disbelief; knowledge on which to base belief“the evidence that smoking causes lung cancer is very compelling”
2. the enclosed land around a house or other building“it was a small house with almost no yard”
3. a tract of land cleared for some special purposes (recreation or burial etc.)
4. a justification for something existing or happening“he had no cause to complain”
5. dregs consisting of solid particles (especially of coffee) that form a residue“it is a Middle Eastern custom to read your future in your coffee grounds”