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.bibber (?b?b?) na drinker; tippler (esp in the expression wine-bibber)Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014bib?ber (?b?b ?r) n. a steady drinker; tippler. [1530?40] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.