a vacant or unobstructed space that is man-made
<noun.artifact>
sample sentences
"they left a small opening for the cat at the bottom of the door"
semantic pointers
hypernym
hyponym
aperture
bell
breech, rear of barrel, rear of tube
way out, exit, issue, outlet
fly, fly front
gap, crack
muzzle, gun muzzle
hole
intake, inlet
interstice
lunette, fenestella
mouth
neck, neck opening
pass-through
port, embrasure, porthole
slit
spout
throat
grille, wicket, lattice
window
window
