The Collaborative International Dictionary of English v.0.48:

Pitted \Pit"ted\ (p[i^]t"t[e^]d), a.
   1. Marked with little pits, as in smallpox. See Pit, v. t.,
      2.
      [1913 Webster]

   2. (Bot.) Having minute thin spots; as, pitted ducts in the
      vascular parts of vegetable tissue.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Pit \Pit\, v. t. [imp. & p. p. Pitted; p. pr. & vb. n.
   Pitting.]
   1. To place or put into a pit or hole.
      [1913 Webster]

            They lived like beasts, and were pitted like beasts,
            tumbled into the grave.               --T. Grander.
      [1913 Webster]

   2. To mark with little hollows, as by various pustules; as, a
      face pitted by smallpox.
      [1913 Webster]

   3. To introduce as an antagonist; to set forward for or in a
      contest; as, to pit one dog against another.
      [1913 Webster]

WordNet (r) 3.0 (2006):

pitted
    adj 1: pitted with cell-like cavities (as a honeycomb) [syn:
           alveolate, faveolate, cavitied, honeycombed,
           pitted]

Moby Thesaurus II by Grady Ward, 1.0:

62 Moby Thesaurus words for "pitted":
   alveolar, alveolate, broken, bumpy, choppy, coarse, coarse-grained,
   corroded, corrugated, cross-grained, defaced, dented, depressed,
   dimpled, engraved, eroded, faveolate, grainy, granulated, homespun,
   honeycombed, horripilant, indented, inequal, irregular, jolty,
   knobbed, linsey-woolsey, marred, nappy, notched, nubbly, nubby,
   perforated, pierced, pily, pimply, pocked, pockmarked, pocky,
   potholed, rank, ripply, rough, rough-cast, rough-grained,
   rough-hewn, ruffled, rutted, rutty, shagged, shaggy, studded,
   textured, uneven, unkempt, unlevel, unpolished, unrefined,
   unsmooth, ununiform, wimpled