v. i. 1. To blow over, or be subdued. [ R. ] Spenser. [ 1913 Webster ]
2. (Mus.) To force so much wind into a pipe that it produces an overtone, or a note higher than the natural note; thus, the upper octaves of a flute are produced by overblowing. [ 1913 Webster ]
a. 1. Having been given more publicity than warranted; having had ascribed more importance than was justified; as, an overblown medical discovery. [ PJC ]