101 Definition
wunōwun
noun
The essential facts or principles of a (specified) subject or activity.
A person who is ignorant of Flirting 101
Webster's New World
numeral
A thoroughly large number. Used especially in book titles.
Wiktionary
Origin of 101
From the practice in US colleges of numbering courses, the initial course normally ending in 101
From Wiktionary
Symbolizing more than 100, an already large number.
From Wiktionary
