Answer:

collapse

Answer	Crossword Clue
COLLAPSE	Give way
COLLAPSE	Give out
COLLAPSE	Cave

COLLAPSE	Come crashing down
COLLAPSE	Cave in
COLLAPSE	Implode
COLLAPSE	Fold compactly
COLLAPSE	What opera hats do.
COLLAPSE	Cave in.
COLLAPSE	Fall apart
COLLAPSE	Breakdown

COLLAPSE	Fall in a heap
COLLAPSE	Topple
COLLAPSE	Fall
COLLAPSE	Tumble

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.