<p><strong>Noun</strong></p><ul><li>Also called bachelor's-button, bluebottle.</li><li>A European composite plant, <em>Centaurea cyanus</em>, growing in grainfields, having blue to white flower heads, often cultivated as an ornamental.</li><li>Also called cornflower blue: a deep, vivid blue.</li><li>Corn cockle.</li><li>Strawflower.</li></ul>