Astronomy. (formerly) the ascending node of the moon or a planet.
Origin of dragon's head
First recorded in 1500–10
or drag·on's head
any of several mints of the genus Dracocephalum having spikes of double-lipped flowers.
Origin of dragonhead
1500–10; translation of New Latin Dracocephalum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
any plant of the genus Dracocephalum, of Europe, Asia, and North America, having dense spikes of white or bluish flowers: family Lamiaceae (labiates)
any North American plant of the related genus Physostegia, having pink or purplish flowers
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