1. To eat or drink something very quickly or hastily. A noun or pronoun can be used between "gulp" and "up." Wow, you must have been hungry! You gulped that up in just a few bites! I had to gulp up my coffee to get to the bus stop on time.
2. To consume or absorb a large amount of something. A noun or pronoun can be used between "gulp" and "up." My daughter has an insatiable curiosity, gulping information up like water. The project has gulped up so much time and money already that we might have to just cut our losses now.
3. To acquire and assimilate something, especially in a large amounts or numbers. A noun or pronoun can be used between "gulp" and "up." Instead of simply competing with its rivals, the media giant has been using its enormous spending capital to gulp them up. The empire spread quickly, gulping up nation after nation around it.
4. To vomit. She's been gulping up everything we've fed her today—I think it's time to call a doctor.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.