plural of cardboard

A bright red colour, between scarlet and crimson.

Lobelia cardinalis (syn. L. fulgens), a species of lobelia native to the Americas, usually with vibrant red flowers.

Lobelia cardinalis, native from Quebec to California and at higher elevations through Central America to Colombia.

(physiology) The circulatory system.

(cryptography) A sheet of card or thin metal, etc., used in composing secret messages. The words of the message are written through a number of holes cut arbitrarily in the sheet, and the remaining paper is then filled with irrelevant words to disguise it.

plural of Cardan grille

Any lamniform shark of the family Cardabiodontidae (but specifically of the genus Cardabiodon).

(nautical) A sea mark (a buoy or other floating or fixed structure) used in pilotage to indicate the position of a hazard and the direction of safe water.

Alternative form of card punch