Zettel	docket
Zettel	slip
Zettel	ticket
Zettel	slip of paper
Zetteln	slips of paper
Zettelkasten	slip box
Zettelkasten {m}	slip box
Zettel {m} Zettel {pl}	slip of paper, slip, note slips of paper, slips, notes
Zettel ankleben verboten!	Stick no bills!, No posting please!