bib / bib/ • n. a piece of cloth or plastic fastened around a person's neck to keep their clothes clean while eating. ∎  the part above the waist of the front of an apron or pair of overalls. ∎  a loose-fitting, sleeveless garment worn for identification, esp. by competitors and officials at sporting events. ∎  a patch of color on the throat of a bird or other animal: a black bird with a white bib.PHRASES: one's best bib and tucker inf. one's finest clothes.bib² • v. (bibbed , bib·bing ) [tr.] archaic drink (something alcoholic).

bib sb. cloth to protect the front of a child's dress XVI. perh. f. (arch.) bib vb. drink, tipple (XIV), which is poss. — L. bibere but may be independently imit.