To blow over, or be subdued. Spenser. [1913 Webster]
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]
overblow, v. t.
To blow away; to dissipate by wind, or as by wind. [1913 Webster]
"When this cloud of sorrow's overblown."
[1913 Webster]
To ascribe an unwarranted importance to. [PJC]
To blow into (a wind instrument) too strongly, so as to produce predominantly overtones. [PJC]