<p><strong>Verb</strong></p><ul><li><p>(used without object)</p><ul><li>to look through a small opening or from a concealed location.</li><li>to look slyly, prying, or furtively.</li><li>to look curiously or playfully.</li><li>to come partially into view; begin to appear: the first crocuses peeping through the snow-covered ground.</li></ul></li><li><p>(used with object)</p><ul><li>to show or protrude slightly.</li></ul></li></ul><p><strong>Noun</strong></p><ul><li>a quick or furtive look or glance.</li><li>the first appearance, as of dawn.</li><li>an aperture for looking through.</li></ul>