Countersign(a.) The signature of a secretary or other officer to a writing signed by a principal or superior, to attest its authenticity.
Countersign(a.) A private signal, word, or phrase, which must be given in order to pass a sentry; a watchword.
Countersign(v. t.) To sign on the opposite side of (an instrument or writing); hence, to sign in addition to the signature of a principal or superior, in order to attest the authenticity of a writing.
Countersigned(imp. & p. p.) of Countersign
Countersigning(p. pr. & vb. n.) of Countersign
Words within countersigns