B/L , b/l or b.l.abbreviation forpl Bs/L, bs/l or bs.l (Commerce) bill of ladingCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014bl. 1. bale. 2. barrel. 3. black. 4. blue. b/l or B/L, bill of lading. B.L. 1. Bachelor of Laws. 2. Bachelor of Letters. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.