Definition of hole:
an opening into or through something
an opening deliberately made in or through something
one playing period (from tee to green) on a golf course; "he played 18 holes"
an unoccupied space
a depression hollowed out of solid matter
a fault; "he shot holes in my argument"
informal terms for a difficult situation; "he got into a terrible fix"; "he made a muddle of his marriage"
informal terms for the mouth
hit the ball into the hole
make holes in