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royal palm

noun
  1. any of several tall, showy feather palms of the genus Roystonea, as R. regia, having a trunk that is swollen in the middle.

Origin of royal palm

An Americanism dating back to 1860–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for royal palm

royal palm

noun
  1. any of several palm trees of the genus Roystonea, esp R. regia, of tropical America, having a tall trunk with a tuft of feathery pinnate leaves
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