boast 1. v. boastÂ·ed, boastÂ·ing, boasts. v. intr. To talk or write about oneself or something related to oneself in a proud or self-admiring way. v. tr.
A supercomputer is a computer that performs at or near the currently highest operational rate for computers. A supercomputer is typically used for scientific and engineering applications that must handle very large databases or do a great amount of computation (or both).
Not to denigrate the Colossus' hard work, but compare that to the NASA Columbia supercomputer that completes 42 and a half trillion operations per second. In other words, what used to be a supercomputer now could qualify as a satisfactory calculator, and what we currently call supercomputers are as advanced as any computer can get. There are, however, a few things that make a computer branch into super territory.