<p><strong>noun</strong></p><ul><li>Slang. a detective.</li><li>a shoe made of gum elastic or India rubber; rubber overshoe.</li><li>sneaker (def 1).</li></ul><p><strong>verb</strong></p><ul><li>(used without object) Slang. to work as a detective.</li><li>to go softly, as if wearing rubber shoes; move or act snoopily or stealthily.</li></ul>