noun Law.

a right of way over or under another's ground or property, as for transporting minerals from a mine.

Origin of wayleave

First recorded in 1400–50, wayleave is from the late Middle English word waylefe. See way1, leave2
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British Dictionary definitions for wayleave



access to property granted by a landowner for payment, for example to allow a contractor access to a building site
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