The Collaborative International Dictionary of English v.0.48:
knowhow \know"how`\, know-how \know"-how`\(n[=o]"hou`) n. the knowledge and skill required to do something; practical knowledge for a specific task. Syn: knowhow. [WordNet 1.5]WordNet (r) 3.0 (2006):
know-how n 1: the (technical) knowledge and skill required to do something