buttonmould

buttonmould

(ˈbʌtənˌməʊld)
n
(Clothing & Fashion) the small core of plastic, wood, or metal that is the base for buttons covered with fabric, leather, etc
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014