Opening

 first or beginning;  the act of opening something; becoming open or being made open; a recognized sequence of moves at the beginning of a game of chess; a vacant or unobstructed space that is man-made; the initial part of the introduction; the first performance (as of a theatrical production); a ceremony accompanying the start of some enterprise; an open or empty space in or between things; opportunity especially for employment or promotion; the first of a series of actions; an entrance equipped with a hatch; especially a passageway between decks of a ship; an aperture or hole that opens into a bodily cavity; a possible alternative

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