<p><strong>Verb</strong></p><ul><li>(used with object)<ul><li>to prepare (an automobile, house, etc.) for cold weather by (in automobiles) adding antifreeze and changing oil or (in houses) adding insulation, heating units, etc.</li></ul></li></ul><p><strong>Verb</strong></p><ul><li>(used without object)<ul><li>to winterize an automobile, house, etc.</li></ul></li></ul>