Hypertext Webster Gateway: "countersignature"
From WordNet (r) 1.7 (wn)
countersignature
n : a second confirming signature endorsing a document already
signed [syn: {countersign}]
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.