put out a pilot balloon

put a blot on put a bold front on put a border on put a boycott on put a bridle on put a check on put a chill into sb put a crimp in put a crimp into put a curb on put a damp over put a damper on

ducts ducts of Cuvier ducts of Pecquet ducts of Rivinus ducts of Santorini ducts of Steno ducts of Wirsung ducts secretory ductule ductules