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.

(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.

plural of crown graph

Alternative spelling of decrown

(Christianity) A reliquary from the early Middle Ages, consisting of a circlet of gold and jewels fitted around a central silver band, which tradition held to be made of iron beaten out of a nail of the True Cross.

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.

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

(dentistry) A prosthetic covering for a tooth.

A game of chance popular with soldiers in the late 19th and early 20th century, in which players bet on combinations of three dice. It is equivalent to chuck-a-luck.

(UK law) A person implicated in a criminal case who turn against their accomplices by serving as a witness for the state and who may enter into a witness protection program afterwards.