1. An insult to
a person, preferrably a
best friend who is male, when they are below you in any kind of status, but still proceed to talk as if they are above you
2. A shortened version of
cum dumpster
1.
My friend is such a cump, since he doesn't want to admit that I'm
better than him
2. Stacy seems like she is a
good student, but she might be a cump for all we know.