overblow1
/ˈəʊvəbləʊ/noun
An instance of overblowing something; Metallurgy ) a period or instance of overblowing a charge in a blast furnace.
Origin
Early 18th century; earliest use found in Gentleman's Dictionary. From overblow.
overblow2
/ˌəʊvəˈbləʊ/verb
1 [with object] Of the wind, etc.: to blow over the surface of. Of snow, sand, etc.: to cover (an animal, area, etc.) by blowing or being blown over.
2To blow (an instrument) too hard or too loudly; to supply wind at too great a pressure to (an organ pipe).
3 [no object] To manipulate the behaviour of the column of air in (a wind instrument, or an organ pipe) in such a way as to produce a harmonic or overtone instead of the fundamental note. Also (of the instrument or pipe): to produce (a harmonic or overtone) by this means. Also without object or (occasionally) refl.
4 [with object] Metallurgy. To subject (a charge in a blast furnace) to an excessive length of blast. Also without object. Compare overblown.
5 [with object] To exaggerate, overplay.
Origin
Late Middle English (in an earlier sense). From over- + blow.