Hatzer wani nau’in bindiga ne mai gajeriyar ganga, wanda aka kera shi don harba harsashi a matsakaicin kusurwar tsayi. Yawancin lokaci ana amfani da shi don wuta ta kai tsaye, ma'ana ana yin ta ne a kan abin da ba a iya gani ga ma'aikatan bindigar. Kalmar "howitzer" ta fito ne daga kalmar Czech "houfnice," wanda ke nufin "taron kudan zuma" kuma yana nufin sautin da harsashi ya yi yayin da yake shawagi a cikin iska.