2. Cardinal numeral. (informal) The ordinality of an element whose predecessor is thousandth; usually called ''thousand-first'' (''US'') or ''thousand-and-first'' (''UK'') but sometimes ''number thousand one'' (''US'') or ''number thousand and one'' (''UK''). ¹
3. Cardinal numeral. (informal) A great number. ¹
¹ Source: wiktionary.com
Lexicographical Neighbors of Thousand One
Other Resources:
