turkey nest
noun
Australian a small earth dam adjacent to, and higher than, a larger earth dam, to feed water by gravity to a cattle trough, etc
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