7. (noun)opening the initialpart of the introduction "the opening established the basic theme"
8. (noun)possibility, possible action, opening a possiblealternative "bankruptcy is always a possibility"
9. (noun)orifice, opening, porta an aperture or hole that opens into a bodily cavity "the orifice into the aorta from the lower left chamber of the heart"
10. (noun)opening a vacant or unobstructed space that is man-made
"they left a small opening for the cat at the bottom of the door"
11. (noun)hatchway, opening, scuttle an entrance equipped with a hatch; especially a passageway between decks of a ship
12. (noun)opening, chess opening a recognized sequence of moves at the beginning of a game of chess "he memorized all the important chess openings"
13. (noun)first step, initiative, opening move, opening the first of a series of actions
14. (adj)opening first or beginning "the memorable opening bars of Beethoven's Fifth"; "the play's opening scene"