What is the meaning of Cardinal?

Of fundamental importance; crucial, pivotal.

Of or relating to the cardinal directions (north, south, east and west).

Describing a “natural” number used to indicate quantity (e.g., zero, one, two, three), as opposed to an ordinal number indicating relative position.

Having a bright red color (from the color of a Catholic cardinal’s cassock).

Being one of the signs Aries, Cancer, Libra and Capricorn, associated with initiation, creation, and force.

One of the officials appointed by the pope in the Roman Catholic Church, ranking only below the pope and the patriarchs, constituting the special college which elects the pope.

Any of various species of New-World passerine songbird in the genus Cardinalis, or in the family Cardinalidae more generally, or of similar appearance and once considered to be related to the former; so called because of their red plumage. (See Wikipedia article for taxonomical information.)

A deep red color, somewhat less vivid than scarlet, the traditional colour of a Catholic cardinal's cassock.

Short for cardinal number, a number indicating quantity, or the size of a set (e.g., 0, 1, 2, 3). (See Cardinal_number.)

Short for cardinal numeral, a word used to represent a cardinal number.

Short for cardinal flower (Lobelia cardinalis), a flowering plant.

Short for cardinal tetra (Paracheirodon axelrodi), a freshwater fish.

A woman's short cloak with a hood, originally made of scarlet cloth.

cardinal number

cardinal (bird)