plod / pläd/ • v. (plod·ded, plod·ding) [intr.] walk doggedly and slowly with heavy steps: we plodded back up the hill | fig. talks on a new constitution have plodded on. ∎ work slowly and perseveringly at a dull task: we were plodding through a textbook.• n. a slow, heavy walk: he settled down to a steady plod. ∎ the sound of a heavy, dull tread; a thud.DERIVATIVES: plod·der n.