Crown is a term that can refer to:

1. The part of your tooth above your gum;
2. An artificial tooth, an artificial replacement for the covering on a tooth;
3. The uppermost branches and foliage of a tree;

See also:
"Crown" is in the NAICS Code "332115"
(Crown and Closure ManufacturingCrowns, metal (e.g., bottle, can), stamping)