plod
     v : walk heavily and firmly, as when weary, or through mud;
         "Mules plodded in a circle around a grindstone" [syn: {slog},
          {footslog}, {trudge}, {pad}, {tramp}]
     [also: {plodding}, {plodded}]
Source: WordNet® 2.0

plodding
     adj : (of movement) slow and laborious; "leaden steps" [syn: {leaden}]
     n 1: hard monotonous routine work [syn: {drudgery}, {grind}, {donkeywork}]
     2: the act of walking with a slow heavy gait
Source: WordNet® 2.0

plodding
     See {plod}
Source: WordNet® 2.0