countersign
verb
[ ˈkaʊntəsʌɪn ]
• add a signature to (a document already signed by another person).
• "each cheque had to be signed and countersigned"
countersign
noun
• a signal or password given in reply to a soldier on guard.
• "advance, patrol, and give the countersign to me"
Origin:
late 16th century (as a noun): from French contresigner (verb), contresigne (noun), from Italian contrassegno, based on Latin signum ‘sign’.
