Word: collapse

Context Sentence: And I'm just worried about the playgroud is going to collapse.

Source: BBC newshttp://downloads.bbc.co.uk/rmhttp/worldservice/learningenglish/
londonlife/scripts/londonlife_070124_camera_obscura.pdf

Definition: v. break into pieces and fall down in suddently.(Oxford Advanced Learner's English--Chinese Dictionary, Fourth Edition, 1998)