411 REFERENCE · Wiktionary
Persian flaw
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
From the idea that Persian carpet makers intentionally leave an imperfection in each rug to show that only God's creations are perfect.
Noun
A flaw, deliberately introduced or retained to make something (originally and especially a Persian carpet) imperfect.
en