separation in wood fibers; narrow breaks or fissures in stems or branches. If severe. may result in tree or branch failure.
cracks (Wikipedia)
| Look up crack in Wiktionary, the free dictionary. |
Crack frequently refers to:
- Crack, a fracture or discontinuation in a body
- Crack, in geology, a fracture (geology) in a rock
- Crack, short for crack cocaine, the freebase form of cocaine that can be smoked
Crack may also refer to: