or Royal Road
an auspicious or easy way or means to achieve something: the royal road to success.
a highway in ancient Persia, 1677 miles (2700 km) long, extending from Susa in W Iran to W Asia Minor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for royal road
an easy or direct way of achieving a desired endthe royal road to success
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012