Military Musical Slang

Posted by Martin Tordoff on March 15, 2002

are there any experts out there who can help me with the word drynack it is used in the context of hand copied music manuscript as in "I am busy dryknacking
this marchcard." or "Its a dryknacked part" I have spoken to many musicians about this slang,some feel it may be of a Germanic nature, any ideas anyone.
Please e~mail me