Definition of cat's ear in US English:

cat's ear

(also cat's ears)

noun

  • A plant which resembles the dandelion, with yellow flowers and rosettes of leaves.

    Genus Hypochaeris, family Compositae: several species, in particular the Old World H. radicata, naturalized in North America

    • ‘The grey which was the most prominent colour in the design was formed by antenara tomemtosum, better known as ‘cat's ear’.’