A crown or headpiece representing city walls or towers, used as a military decoration in Ancient Rome and later as a heraldic symbol in Europe.

a phenomenon observed in some tree species, in which the crowns of fully stocked trees do not touch each other, forming a canopy with channel-like gaps.

plural of crown graph

(graph theory) An undirected graph with 2n vertices in the two sets { u₁, u₂, ..., uₙ } and { v₁, v₂, ..., vₙ } and with an edge from uᵢ to vⱼ whenever i ≠ j.

Of a bird, having yellow plumage covering the top part of the head.

(rare, virology) A member of the family Coronaviridae; a coronavirus.

plural of crown virus

A lease of crown land (land belonging to the government when the head of state is a monarch).

In England and Wales, a higher court of law that sits regularly in various regional locations, normally with a judge and jury. It deals with serious offences referred from magistrates' courts, as well as appeals against the decisions of magistrates' courts.

(dentistry) A prosthetic covering for a tooth.