fall in

phrasal verb·1 sense·particle in

Meanings

1

Collapse inward

Why “in”? Walls close around something. What is in is held inside.

The roof fell in.
The roof collapsed inward.
The old ceiling fell in.
The old ceiling collapsed inward.

Don't confuse with

fall infall out

Fall in means collapse inward. Fall out means have an argument and stop being friends.

Test yourself

The roof fell in. What does it mean?

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