small opening (like a window in a door) through which business can be transacted | a recognized sequence of moves at the beginning of a game of chess |
small gate or door (especially one that is part of a larger door) | the act of opening something |
a small arch used as croquet equipment | becoming open or being made open |
cricket equipment consisting of a set of three stumps topped by crosspieces; used in playing cricket | the first of a series of actions |
| a vacant or unobstructed space that is man-made |
| 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 |
| 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 |