knowledge of how to do something; faculty or skill for a particular activity; expertise: Designing a computer requires a lot of know-how.
Origin of know-how
1830–40, Americanism; noun use of verb phrase know how
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
ingenuity, aptitude, or skill; knack
commercial and saleable knowledge of how to do a particular thing; experience
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