minicheeseburger means A small cheeseburger.
Etymology
From mini- + cheeseburger.
noun
- A small cheeseburger.“Becky Marx was perched at Agnetta's left, delicately sampling from an hors d' ouevres plate that included two Chinese dumplings, a minicheeseburger, several shrimp sauteed in lemon butter, six chicken nachos, and two stuffed mushrooms.”