Definition of pattern card in US English:

pattern card

noun

  • 1A sample of cloth, wallpaper, colour, etc., fixed to a card.

  • 2Weaving. Each of the perforated cards which encode the pattern in a jacquard loom or a knitting machine.

Origin

Mid 18th century; earliest use found in Benjamin Franklin (1706–1790), natural philosopher, writer, and revolutionary politician in America. From pattern + card.

Pronunciation

pattern card

/ˈpatn kɑːd/