The Collaborative International Dictionary of English v.0.48:

Shingles \Shin"gles\, n. [OF. cengle a girth, F. sangle, fr. L.
   cingulum a girdle, fr. cingere to gird. Cf. Cincture,
   Cingle, Surcingle.] (Med.)
   A kind of herpes (Herpes zoster) which spreads half way
   around the body like a girdle, and is usually attended with
   violent neuralgic pain.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Lap \Lap\, v. t. [OE. lappen to fold (see Lap, n.); cf. also
   OE. wlappen, perh. another form of wrappen, E, wrap.]
   1. To fold; to bend and lay over or on something; as, to lap
      a piece of cloth.
      [1913 Webster]

   2. To wrap or wind around something.
      [1913 Webster]

            About the paper . . . I lapped several times a
            slender thread of very black silk.    --Sir I.
                                                  Newton.
      [1913 Webster]

   3. To infold; to hold as in one's lap; to cherish.
      [1913 Webster]

            Her garment spreads, and laps him in the folds.
                                                  --Dryden.
      [1913 Webster]

   4. To lay or place over anything so as to partly or wholly
      cover it; as, to lap one shingle over another; to lay
      together one partly over another; as, to lap
      weather-boards; also, to be partly over, or by the side of
      (something); as, the hinder boat lapped the foremost one.
      [1913 Webster]

   5. (Carding & Spinning) To lay together one over another, as
      fleeces or slivers for further working.
      [1913 Webster]

   To lap boards, shingles, etc., to lay one partly over
      another.

   To lap timbers, to unite them in such a way as to preserve
      the same breadth and depth throughout, as by scarfing.
      --Weale.
      [1913 Webster]

WordNet (r) 3.0 (2006):

shingles
    n 1: eruptions along a nerve path often accompanied by severe
         neuralgia [syn: herpes zoster, zoster, shingles]

Moby Thesaurus II by Grady Ward, 1.0:

184 Moby Thesaurus words for "shingles":
   African lethargy, Asiatic cholera, Chagres fever, German measles,
   Haverhill fever, MS, acne, acne vulgaris,
   acute articular rheumatism, ague, alkali disease, amebiasis,
   amebic dysentery, amyotrophic lateral sclerosis, anthrax,
   bacillary dysentery, bastard measles, black death, black fever,
   blackwater fever, brain disease, breakbone fever, brucellosis,
   bubonic plague, cachectic fever, cephalalgia, cerebral palsy,
   cerebral rheumatism, chicken pox, cholera, chorea, cowpox,
   dandy fever, deer fly fever, dengue, dengue fever, dermamycosis,
   dermatitis, dermatosis, diphtheria, dumdum fever, dysentery,
   eczema, elephantiasis, emotional disorder, encephalitis lethargica,
   enteric fever, epilepsy, epithelioma, erysipelas, erythema,
   exanthem, falling sickness, famine fever, five-day fever, flu,
   frambesia, glandular fever, glossopharyngeal neuralgia, grippe,
   hansenosis, headache, heat rash, hepatitis, herpes, herpes simplex,
   herpes zoster, histoplasmosis, hives, hookworm, hydrophobia,
   impetigo, infantile paralysis, infectious mononucleosis,
   inflammatory rheumatism, influenza, ischialgia, itch, jail fever,
   jungle rot, kala azar, kissing disease, lepra, leprosy,
   leptospirosis, lichen, lichen primus, loa loa, loaiasis, lockjaw,
   lupus, lupus vulgaris, madness, malaria, malarial fever,
   marsh fever, measles, meningitis, migraine, miliaria, milzbrand,
   multiple sclerosis, mumps, nervous disorder, neuralgia, neuritis,
   neuropathy, organic psychosis, ornithosis, osteomyelitis, palsy,
   paratyphoid fever, parotitis, parrot fever, pemphigus, pertussis,
   pneumonia, polio, poliomyelitis, polyarthritis rheumatism,
   polyneuritis, ponos, pressure neuropathy, priapism, prickly heat,
   pruigo, pruritus, psittacosis, psora, rabbit fever, rabies,
   radiculitis, rat-bite fever, relapsing fever, rheumatic fever,
   rickettsialpox, ringworm, rubella, rubeola, scabies, scarlatina,
   scarlet fever, schistosomiasis, sciatic neuritis, sciatica,
   septic sore throat, shaking palsy, skin cancer, sleeping sickness,
   sleepy sickness, smallpox, snail fever, spastic paralysis,
   splenic fever, spotted fever, strep throat, swamp fever, tetanus,
   tetter, the jerks, thrush, tic douloureux, tinea, toxic psychosis,
   trench fever, trench mouth, tuberculosis, tularemia, typhoid,
   typhoid fever, typhus, typhus fever, undulant fever, vaccinia,
   varicella, variola, venereal disease, viral dysentery,
   whooping cough, yaws, yellow fever, yellow jack, zona, zoster