1. To join with or connect to something. These two toys link up to create a super-sized robot. According to the map, the creek should link up with the main river about a mile from here.

2. To connect two or more things together. In this usage, noun or pronoun can be used between "link" and "up." If you link up the monitors, you can have each spreadsheet open at full size on each screen. Just link your phones up over Bluetooth and share the data wirelessly.

3. To meet with someone. I'm linking up with the teaching assistant this Tuesday to go over my test results. I'd love to pick your brain about new ideas for our next project. Let's link up sometime next week!

4. To join someone or a group to form a team, association, partnership. They should definitely link up—I think their two companies would be really well suited to each other. By linking up with the foreign distribution company, we've been able to quadruple our sales in under a year. If we linked up, we could solve this crime in no time.

5. To introduce two or more people; to join two or more people together into a team, association, or partnership. In this usage, a noun or pronoun can be used between "link" and "up." I'm going to link you up with my tax adviser—she should be able to help you with your problem. My job is to link companies up with a PR representative who fits their day-to-day needs. I've been trying to link you two up for years—I think you'd be perfect for each other!