opening

[1]	break , gap , breach , rent , rift , cleft , crack , crevice , fissure , cranny , chink , pit , gap , split , slit , slot , aperture , hole , orifice , separation
[2]	opportunity , chance , occasion , toe-hold , foothold , (Colloq) break , toe/foot in the door , (Brit) look-in
[3]	job , position , opportunity , vacancy
[4]	beginning , opening night , curtain raising , commencement , start , birth , origin , outset , onset , inauguration , launch , send-off , initiation , presentation , debut , vernissage , (US) start-off , start-up
[5]	possibility , possible action
[6]	orifice , porta
[7]	hatchway , scuttle
[8]	chess opening
[9]	first step , initiative , opening move