S: (v) slog, footslog, plod, trudge, pad, tramp (walk heavily and firmly, as when weary, or through mud) "Mules plodded in a circle around a grindstone"
S: (v) pad, fill out (line or stuff with soft material) "pad a bra"
S: (v) pad, bolster (add padding to) "pad the seat of the chair"