One of the bars which support the crown sheet of a steam-boiler furnace.

The flat plate which forms the top of the furnace or firebox of an internally fired steam boiler.

A cancerous sore formed round the corners of a horse's hoof.

(historical) An English gold coin of the reign of James I, worth four shillings.

An early type of window glass made by blowing glass into a hollow globe (crown) and then flattening it on a punty, reheating and spinning out into a flat disk by centrifugal force.

plural of half-crown

plural of half-a-crown

(Christianity) The crown made of a thorny plant that Christ was forced to wear before his Crucifixion, in mocking reference to his alleged status as ‘king of the Jews’, or a representation of this.

(UK, Canada, Australia, New Zealand) In Britain and some Commonwealth countries, land that is owned by the state, nominally titled to the reigning King or Queen of England, and whose use and disposition is controlled by a government within that Commonwealth country or by an official representative of the monarch.

(phytopathology) A disease of plants caused by infection of soil bacteria of the genus Agrobacterium