Bib
Garak using a napkin as a bib
A bib was a cloth object used to protect clothing from food and beverage stains.
In 2152, Chef's dinner menu for the crew of Enterprise NX-01 advertised a homestyle barbecue meal on Sunday August 24th, with "Bring your own bib" in brackets. (ENT: "Singularity")
In 2371, Garak used a napkin as a bib, tucking it into his shirt collar. (DS9: "Distant Voices")