A person or thing that makes gall, which refers to a plant abnormality caused by various organisms.

पत्तों या तनों पर बनी गालियाँ

English Usage: The gall-maker infestation led to a noticeable change in the plant's appearance.

Hindi Usage: गाल-निर्माता का संक्रमण पौधे की उपस्थिति में स्पष्ट परिवर्तन लाया।