call in

动词

To communicate with a base etc, by telephone. (intransitive) · I was too unwell to work yesterday so I called in sick.
To report; communicate (a message) by telephone or similar. (transitive) · The hoaxer called in a bomb threat.
To pay a short visit. (intransitive) · Near-synonym: call on (transitive)· I'll call in this afternoon to pick up my prescription.
To summon someone, especially for help or advice. (transitive) · The government called in the army to deal with the riots.
To withdraw something from sale or circulation. (transitive)
To request immediate repayment of (a debt). (transitive)

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I know of nobody that is coming, I am sure, unless Charlotte Lucas should happen to call in; and I hope _my_ dinners are good enough for her.

“Let us call in the soldier with the green whiskers,” he said, “and ask his advice.”

Here was a bit of professional business between two gentlemen, and one of them must needs call in a detective!

If I have to call in the aid of the police you will find how seriously you are compromised.

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