The Collaborative International Dictionary of English v.0.48:

Slog \Slog\ (sl[o^]g), v. i.
   1. to walk heavily; to plod; to walk through resisting
      terrain, as in mud.
      [PJC]

   2. To work steadily and ploddingly; to toil.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Slog \Slog\ (sl[o^]g), v. t. & i. [Cf. Slug, v. t.]
   To hit hard, esp. with little attention to aim or the like,
   as in cricket or boxing; to slug. [Cant or Slang]
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

slog
    v 1: work doggedly or persistently; "She keeps plugging away at
         her dissertation" [syn: plug away, peg away, slog,
         keep one's nose to the grindstone, keep one's shoulder
         to the wheel]
    2: walk heavily and firmly, as when weary, or through mud;
       "Mules plodded in a circle around a grindstone" [syn: slog,
       footslog, plod, trudge, pad, tramp]
    3: strike heavily, especially with the fist or a bat; "He
       slugged me so hard that I passed out" [syn: slug, slog,
       swig]

Moby Thesaurus II by Grady Ward, 1.0:

143 Moby Thesaurus words for "slog":
   amble, bang, barge, bash, bat, belt, biff, bonk, bowl along,
   bundle, catch, clap, clip, clobber, clout, clump, coldcock, crack,
   cut, dash, deal, deal a blow, deck, dig, ding, drag, drudge, fag,
   fetch, fetch a blow, flounce, foot, footslog, grind, grub, halt,
   hammer, hammer away, hippety-hop, hit, hit a clip, hitch, hobble,
   hop, jab, jog, jolt, jump, keep doggedly at, knock, knock cold,
   knock down, knock out, let have it, limp, lumber, lunge, lurch,
   mince, moil, muck, nail, pace, paddle, paste, peg, peg away,
   piaffe, piaffer, plod, plug, plug along, plug at, plug away, plunk,
   poke, pound away, prance, punch, rack, roll, sashay, saunter,
   scuff, scuffle, scuttle, shamble, shuffle, sidle, single-foot,
   skip, slam, slave, slink, slither, slog away, slop, slouch, slug,
   smack, smite, snap, soak, sock, stagger, stalk, stamp, stodge,
   stomp, straddle, straggle, stride, strike, strike at, stroll,
   strut, stump, swagger, swat, swing, swipe, thump, thwack, tittup,
   toddle, toil, totter, traipse, trash, travail, trip, trudge,
   waddle, wade through, wallop, wamble, whack, wham, whop, wiggle,
   wobble, work away, yerk



The Free On-line Dictionary of Computing (30 December 2018):

Schelog
slog

    (Previously "slog"?) A Prolog to
   Chez Scheme macro translator by .
   Schelog relies on continuations.

   (http://cs.rice.edu/CS/PLT/packages/schelog).

   (2000-11-20)