Here you will find one or more explanations in English for the word Howitzer.
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Howitzer
Howitzer How"itz*er, n. [G. haubitze, formerly hauffnitz,
Bohem. haufnice, orig., a sling.] (Mil.)
(a) A gun so short that the projectile, which was hollow,
could be put in its place by hand; a kind of mortar.
[Obs.]
(b) A short, light, largebore cannon, usually having a
chamber of smaller diameter than the rest of the bore,
and intended to throw large projectiles with
comparatively small charges.
Meaning of Howitzer from wikipedia