
n.,
 The act of signing one's name on a document; the signature so affixed. [Government] 
n., The format used to distribute a television signal. Examples include NTSC, PAL, SECAM. [Models (MCP)] 
n., [diplomatics] An intrinsic element of documentary form that comprises the mention of the name of the author of the document and/or the action and which may take the form of an entitling. [Archives] 
n., Something written, printed, or engraved at the top or on the outside surface of an object, especially a name