opening
open.ing \'o-p-(*-)nin\ n 1a: an act or instance of making or becoming open
1b: an act or instance of beginning : COMMENCEMENT; esp : a formal and
usu. public event by which something new is put officially into operation
2: something that is open : as 2a1: BREACH, APERTURE 2a2: an open width :
SPAN 2b: an area without trees or with scattered usu. mature trees that
occurs a s a break in a forest 2c: two pages that face one another in a
book 3: something that constitutes a beginning : as 3a: a planned series
of moves made at the beginning of a game of chess or c heckers 3b: a first
performance 4: OPPORTUNITY, OCCASION