<p><strong>Noun</strong></p><ul><li>any of several composite plants, especially of the genera <em>Heliopsis</em> and <em>Buphthalum</em>, having ray flowers surrounding a conspicuous disk.</li><li>Informal: any of several shorebirds, as the least sandpiper.</li><li>Architecture: <em>oeil-de-boeuf</em>.</li></ul>