- [noun] 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"
- [noun] a ceremony accompanying the start of some enterprise
- [noun] becoming open or being made open; "the opening of his arms was the sign I was waiting for"
- [noun] the first performance (as of a theatrical production); "the opening received good critical reviews"
Synonyms: night, curtain raising
- [noun] the act of opening something; "the ray of light revealed his cautious opening of the door"
- [noun] opportunity especially for employment or promotion; "there is an opening in the sales department"
- [noun] the initial part of the introduction; "the opening established the basic theme"
- [noun] a possible alternative; "bankruptcy is always a possibility"
Synonyms: possibility, possible action
- [noun] an aperture or hole opening into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart"
Synonyms: orifice, porta
- [noun] a vacant or unobstructed space that is man-made; "they left a small opening for the cat at the bottom of the door"
- [noun] an entrance equipped with a hatch; especially a passageway between decks of a ship
Synonyms: hatchway, scuttle
- [noun] the first of a series of actions; "he memorized all the important chess openings"
Synonyms: first step, initiative, move
- [adjective] first or beginning; "the memorable opening bars of Beethoven's Fifth"; "the play's opening scene"
Ranvier's nodes, nodes of Ranvier
crack, cleft, crevice, fissure, scissure
rip, rent, snag, split, tear
- aortic orifice
- porta hepatis
cervix, uterine cervix, cervix uteri
urethral orifice, external orifice
anus, arse, arsehole, asshole
fontanelle, fontanel, soft spot
breech, rear of barrel, rear of tube
exit, issue, outlet, way out
fly, fly front
gun muzzle, muzzle
port, embrasure, porthole
wicket, lattice, grille
- escape hatch
- curtain raiser
- first base
- peace initiative