COUNTERSIGN
countersign
Noun
- a second signature added to a document to affirm the validity of the signature of the first person
- The response to a sign or signal.
- Only those who give the countersign may enter the Masonic Lodge.
Verb
- To sign on the opposite side of (an instrument or writing).
- to add a second signature to a document, affirming the validity of the signature of another person
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