Dictionary.com
definitions

bib.

  1. (in prescriptions) drink.

Origin of bib.

From the Latin word bibe

Bib.

  1. Bible.
  2. Biblical.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
bib. in Medicine

bib.

abbr.
  1. bibe (drink)
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.