Definition of "vuln" []

• To wound (oneself) by biting at the breast. Used of the pelican, which was once believed to feed its young with its blood, as a heraldic motif and symbol of Christ. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "IT Security is on my mind, I think I found a vuln in a common VLAN topology too, but I need to play around a bit more with it."
• "First we target site itself. if we can't find a vuln [vulnerability]. on the script of site we try accessing server or vps [virtual private server]."
• "Or are you worried about that SSL Renegotiation vuln?"