A fruit grown on coconut trees, largely grown in hot, tropical areas. It has a thick shell. A falling coconut can often cause serious injury to a person's head, back, and shoulders.
Coconuts can also be used to make musical instruments. 
- ↑ http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&list_uids=6502774&dopt=Abstract
- ↑ http://www.geocities.com/~olelo/o-h-instruments.html