Source : Webster's Revised Unabridged Dictionary (1913)

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.

            In a firm building, the cavities ought not to be
            filled with rubbish, but with brick or stone fitted
            to the crannies.                      --Dryden.

            He peeped into every cranny.          --Arbuthnot.

   2. (Glass Making) A tool for forming the necks of bottles,
      etc.

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.]

            The ground did cranny everywhere.     --Golding.

   2. To haunt, or enter by, crannies.

            All tenantless, save to the crannying wind. --Byron.

Cranny \Cran"ny\, a. [Perh. for cranky. See {Crank}, a. ]
   Quick; giddy; thoughtless. [Prov. Eng.] --Halliwell.

Source : WordNet®

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