Definition of "Grounds" :

noun: the enclosed land around a house or other building

noun: your basis for belief or disbelief; knowledge on which to base belief

noun: a justification for something existing or happening

noun: a tract of land cleared for some special purposes (recreation or burial etc.)

noun: 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."