The following article was sourced from a Wikipedia page at the following address: http://en.wikipedia.org/wiki/Bib_(garment)
A bib is a garment worn hanging from the neck on the chest to protect clothing from spilt food. Bibs are frequently used by children, especially infants, but also by some adults. Bibs are also worn when consuming certain "messy" foods, such as lobster.
The word, reported in English since 1580, stems from a verb bibben "to drink" (c.1380), from Latin bibere, either because it was worn while drinking or because it "soaked up" spills.
Part of garment
The term bib may also refer to the part of a garment that covers the chest. For instance, an apron that covers the chest may be referred to as a bib apron. The part of a jumper dress or of an overall that covers the chest may also be referred to as a bib.
For more information re baby bottles, please click on the following link: http://en.wikipedia.org/wiki/Bib_(garment)