1. To ask one to come to a particular place. A noun or pronoun can be used between "call" and "in." In this usage, the phrase can also be written as "call into." I knew about the public outcry against my article, so I was not surprised when the editor called me in for a chat. If you don't call the dog into the house, we'll be out here all night.

2. To request one's aid or expertise. A noun or pronoun can be used between "call" and "in." I've called in Nancy to help you—as a senior member of the team, she's dealt with these kinds of issues before. When that case had me stumped, I called another detective in to review it with me.

3. To call a specific place by phone. A noun or pronoun can be used between "call" and "in." I called in to a radio station and won two tickets to that big concert! I am working from home today, but I have to call in for a meeting at 3. Nancy from our North Carolina office will call in to help you—she's dealt with these kinds of issues before.

4. To order something by phone. A noun or pronoun can be used between "call" and "in." Just tell me what you want for dinner and I'll call it in. Headquarters just called in an air strike—we need to evacuate this area now!

5. To pull something from circulation. A noun or pronoun can be used between "call" and "in." In this usage, "back" is sometimes used before "in," as in, "call (something) back in." Due to the growing backlash, the publisher has called in that issue of the magazine. Be absolutely sure the copy is clean, because I don't want to have to call it back in.

6. To report something by phone (or other means of voice communication, such as a radio) in an official capacity, such as in law enforcement. A noun or pronoun can be used between "call" and "in." I'll secure the perimeter while you call in the robbery. I know it's the end of our shift, but this is serious—we have to call it in.