Longman Dictionary of Contemporary English homepage

overrun

1 verb
     
o‧ver‧run1 past tense overran past participle overrun, present participle overrunning
1 [transitive usually passive] if unwanted things or people overrun a place, they spread over it in great numbers
be overrun by/with something
a tiny island overrun by tourists
The house was overrun with mice.
2 [intransitive and transitive] to take more time or money than intended:
The final speaker overran by at least half an hour.
3 [transitive usually passive] if soldiers overrun a place, they take control of it:
Poland was overrun by the Russian army.
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.
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