<p><strong>Adjective:</strong></p><ul><li>Situated or traveling in a direction extending across a town or city: a crosstown street; a crosstown bus.</li></ul><p><strong>Adverb:</strong></p><ul><li>In a direction extending across a town or city: The car sped crosstown.</li></ul><p><strong>Noun (Informal):</strong></p><ul><li>A bus running primarily in a crosstown direction.</li></ul>