timpa noun English. A short drop-off or bank of watercourse. Example sentence: Subanen. Dalan pangay ditug Dipani, duuni mbianan timpa. Ditu tanda', subay mengmaya'maya'a gupia mpanaw, pu' sa' medulasa, melabu'a dayun, nda'iduni penguidan mu. English. On the way to Dipani, you have to pass a drop-off. When you get to it, you have to walk very slowly, because if you slip, you'll fall, because you will have nothing to hold onto. Synonym. keba