The Collaborative International Dictionary of English v.0.48:

Cranny \Cran"ny\, v. i. [imp. & p. p. Crannied (-n?d); p. pr.
   & vb. n. Crannying.]
   1. To crack into, or become full of, crannies. [R.]
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            The ground did cranny everywhere.     --Golding.
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   2. To haunt, or enter by, crannies.
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            All tenantless, save to the crannying wind. --Byron.
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The Collaborative International Dictionary of English v.0.48:

Cranny \Cran"ny\, a. [Perh. for cranky. See Crank, a. ]
   Quick; giddy; thoughtless. [Prov. Eng.] --Halliwell.
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The Collaborative International Dictionary of English v.0.48:

Cranny \Cran"ny\ (kr[a^]n"n[y^]), n.; pl. Crannies (-n[i^]z).
   [F. cran notch, prob. from L. crena (a doubful word).]
   1. A small, narrow opening, fissure, crevice, or chink, as in
      a wall, or other substance.
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            In a firm building, the cavities ought not to be
            filled with rubbish, but with brick or stone fitted
            to the crannies.                      --Dryden.
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            He peeped into every cranny.          --Arbuthnot.
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   2. (Glass Making) A tool for forming the necks of bottles,
      etc.
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WordNet (r) 3.0 (2006):

cranny
    n 1: a long narrow depression in a surface [syn: crevice,
         cranny, crack, fissure, chap]
    2: a small opening or crevice (especially in a rock face or
       wall)

Moby Thesaurus II by Grady Ward, 1.0:

131 Moby Thesaurus words for "cranny":
   abysm, abyss, alcove, arroyo, asylum, bay, bezel, bolt-hole,
   box canyon, breach, break, cache, canyon, carrel, cavity, chamfer,
   chap, chase, chasm, check, chimney, chink, cleft, cleuch, clough,
   col, concealment, corner, corrugation, coulee, couloir, cove,
   cover, covert, coverture, crack, crevasse, crevice, cubby,
   cubbyhole, cubicle, cut, cwm, dado, dark corner, defile, dell, den,
   dike, ditch, donga, draw, dugout, engraving, excavation, fault,
   fissure, flaw, flume, flute, fluting, foxhole, fracture, funk hole,
   furrow, gap, gape, gash, gorge, gouge, groove, gulch, gulf, gully,
   hideaway, hideout, hidey hole, hiding, hiding place, hole,
   incision, joint, kloof, lair, leak, microgroove, moat, niche, nook,
   notch, nullah, opening, oriel, pass, passage, rabbet, ravine,
   recess, refuge, rent, retreat, rifling, rift, rime, roomlet, ruck,
   rupture, rut, sanctuary, scissure, score, scratch, seam,
   secret place, slit, slot, snuggery, split, stash, streak, stria,
   striation, sulcation, sulcus, trench, undercovert, valley, void,
   wadi, well-worn groove, wrinkle