alengaleng 2 noun English. A large, edible mushroom, having a gray head and white stalk. Example sentence: Subanen. Ki tubu' galengaleng, ndi' mpia pa'aan di gembata', pu' sa' sugu'en, laak dayun megalengaleng. English. It's not good to let children eat alengaleng mushrooms, because when you send them on an errand, they just go looking around. Generic. tubu'