Countersign - Definition
countersign
n 1: a secret word or phrase known only to a restricted group;
"he forgot the password" [syn: password, watchword,
word, parole, countersign]
2: a second confirming signature endorsing a document already
signed [syn: countersignature, countersign]
v 1: add one's signature to after another's to attest
authenticity; "You must countersign on this line of the
contract"