<p><strong>Noun</strong></p><ul><li>A cardinal number, four plus one.</li><li>A symbol for this number, as 5 or V.</li><li>A set of this many persons or things.</li><li>A playing card, die face, or half of a domino face with five pips.</li><li>Informal. A five-dollar bill: Can you give me two fives for a ten?</li></ul><p><strong>Adjective</strong></p><ul><li>Amounting to five in number.</li></ul>