<p><strong>Verb</strong></p><ul><li>to call upon to do something specified.</li><li>to call for the presence of, as by command, message, or signal; call.</li><li>to call or notify to appear at a specified place, especially before a court: to summon a defendant.</li><li>to authorize or order a gathering of; call together by authority, as for deliberation or action: to summon parliament.</li><li>to call into action; rouse; call forth (often followed by up): to summon all one's courage.</li></ul>