wax, lead or other material upon which an impression has been made and attached to a document or applied t
o the face thereof. Originally serving as a means of authentication of the author of a record and of the record itself. [Archives] 
n., A device for impressing characteristic marks into a soft surface, often to indicate ownership. Seals may be in the form of
 stamps or cylinder seals. [Sciences] 
n., A piece of wax, lead or other material upon which an impression in relief from a seal has been made, at