なだれ込こむ

godan verb (-mu), intransitive verb

rush into; surge into; crowd into

Describes a large number of people or things entering a place all at once, like an avalanche. Often used for crowds flooding into a venue, station, or room.

• 開かい店てんと同どう時じに客きゃくが店てん内ないになだれ込こんだ。

  As soon as the store opened, customers surged inside.

• 終しゅう電でんが着つくと、大おお勢ぜいの乗じょう客きゃくが改かい札さつになだれ込こむ。

  When the last train arrives, a crowd of passengers rushes through the ticket gate.