separation in wood fibers; narrow breaks or fissures in stems or branches. If severe. may result in tree or branch failure.

cracks (Wikipedia)

Crack frequently refers to:

  • Crack, a fracture or discontinuation in a body
  • Crack, in geology, a fracture in a rock
  • Crack, short for crack cocaine, the freebase form of cocaine that can be smoked

Crack may also refer to:

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