nouns
an opening into or through something
is a type of (narrower)
an open or empty space in or between things
"there was a small opening between the trees"; "the explosion made a gap in the wall"
an opening deliberately made in or through something
is a type of (narrower)
a vacant or unobstructed space that is man-made
"they left a small opening for the cat at the bottom of the door"
one playing period (from tee to green) on a golf course
"he played 18 holes"
an unoccupied space
is a type of (narrower)
an empty area (usually bounded in some way between things)
"the architect left space in front of the building"; "they stopped at an open space in the jungle"; "the space between his teeth"
a depression hollowed out of solid matter
a fault
"he shot holes in my argument"
is a type of (narrower)
an imperfection in an object or machine
"a flaw caused the crystal to shatter"; "if there are any defects you should send it back to the manufacturer"
informal terms for a difficult situation
"he got into a terrible fix"; "he made a muddle of his marriage"
informal terms for the mouth