fall in

verb

Definition of fall in

1 : to sink inward
  • the roof fell in
2 : to take one's proper place in a military formation
fall in with
1 : to concur with
  • had to fall in with her wishes
2 : to harmonize with
  • it falls in exactly with my views
3 : to begin associating with
  • she fell in with a bad crowd

First Known Use of fall in

1719

in the meaning defined at sense 1

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