bib (b?b)n.1. A piece of cloth or plastic secured under the chin and worn, especially by small children, to protect the clothing while eating.2. a. The part of an apron or pair of overalls worn over the chest: “The day my son Laurie started kindergarten he renounced corduroy overalls with bibs and began wearing blue jeans with a belt” (Shirley Jackson).b. Bibbed overalls worn while skiing.c. A piece of cloth or plastic bearing a number, usually worn over the chest or back, identifying a competitor in a race.3. A patch of differently colored feathers or fur on the throat or chest of a bird or mammal.tr. & intr.v. bibbed, bib·bing, bibs To drink or indulge in drinking.[Probably from Middle English bibben, to drink heartily, from Latin bibere; see p?(i)- in Indo-European roots.]bib?ber n.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.bib (b?b) n1. (Clothing & Fashion) a piece of cloth or plastic worn, esp by babies, to protect their clothes while eating2. (Clothing & Fashion) the upper part of some aprons, dungarees, etc, that covers the upper front part of the body3. (Animals) Also called: pout or whiting pout a light-brown European marine gadoid food fish, Gadus (or Trisopterus) luscus, with a barbel on its lower jaw4. (Building) short for bibcock5. stick one’s bib in informal Austral to interferevb, bibs, bibbing or bibbedarchaic to drink (something); tipple[C14 bibben to drink, probably from Latin bibere]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014bib (b?b) n., v. bibbed, bib?bing. n. 1. a shield of cloth, paper, or other material tied under the chin to protect the clothing during a meal. 2. the front part of an apron, overalls, or the like above the waist. v.t., v.i. 3. to drink; imbibe. [1275?1325; Middle English bibben to drink