Wordnet 3.0
NOUN (1)
1. 
 (law) the completion of a legal instrument (such as a contract or deed) by signing it (and perhaps sealing and delivering it) so that it becomes legally binding and enforceable; 
[syn: execution, execution of instrument]
WordNet (r) 3.0 (2006):
execution of instrument
    n 1: (law) the completion of a legal instrument (such as a
         contract or deed) by signing it (and perhaps sealing and
         delivering it) so that it becomes legally binding and
         enforceable [syn: execution, execution of instrument]