noun:
aperture, breach, break, chink, crevice, door, fissure, hatch, interstice, orifice, outlet, perforation, rift, rupture, slit, slot, space, split, spout, vent, window
verb:
perforating, piercing, empierce, drilling; scooping out; puncturing, uncovering
bloom
debut.
Another word for prelude would be an overture or opening of an opera.
Polygon
opening, outlet
A small opening or gap.
wound or laceration.
another word for chasm that begins with o omission opening oversight
A field, just a clearing, an opening
Orifice, opening, maw
doorway, portal, opening, entrance, entry, exit
Ingress is another word for entry into a space. Ingress can be accomplished by a door, window, or another kind of opening.