Napkin n. : A little towel, or small cloth, esp. one for wiping the fingers and mouth at table.

Napkin n. : A handkerchief.

Example:
Napkin Pirates: Is anyone aware of a good place online to buy Napkin pirates or pirate Napkins?

Taxonomy
napkin, serviette, free encyclopedia, the United Kingdom, napkin ring, Canada, cloth covering, paper napkins, search, Australia, rectangle, paper, the French, nappe, kin, diminutive, suffix, napkin holder.

Defination from the web:
napkin (also in Canada, the United Kingdom and Australia: serviette) is a rectangle of cloth or paper used at the table for wiping the mouth while eating. ... Conventionally, the napkin is folded and placed to the left of the place setting, outside the outermost fork. ...