a recognized sequence of moves at the beginning of a game of chess | the act of putting one thing into another |
the act of opening something | the act of beginning something new |
becoming open or being made open | the act of starting something for the first time; introducing something new |
the first of a series of actions | the first section of a communication |
a vacant or unobstructed space that is man-made | formally making a person known to another or to the public |
an entrance equipped with a hatch; especially a passageway between decks of a ship | a basic or elementary instructional text |
an aperture or hole that opens into a bodily cavity | a new proposal |
a possible alternative | |
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 | |