• any of several plants of the genus Acanthus, of the Mediterranean region, having spiny or toothed leaves and showy, white or purplish flowers
  • architectural ornament, as in the Corinthian capital, resembling the leaves of this plant
  • a prickly plant with toothed leaves, also ACANTH, ACANTHA [n ACANTHUSES or ACANTHI]
  • a prickly herb [n ACANTHI, ACANTHUSES] : ACANTHINE [adj], ACANTHOID [adj], ACANTHOUS [adj]