The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of various plants, such as species of the genera Helichrysum, Xeranthemum, and Erythrina, having flowers that retain their shape and color when dried.
n. Any of various papery flowers, often dried and used as decoration.
the GNU version of the Collaborative International Dictionary of English
n. A plant with a conspicuous, dry, unwithering involucre, as the species of Antennaria, Helichrysum, Gomphrena, etc. See everlasting.
The Century Dictionary and Cyclopedia
n. Any one of the flowers commonly called everlasting, or a wreath made of such flowers.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. mostly widely cultivated species of everlasting flowers having usually purple flowers; southern Europe to Iran; naturalized elsewhere
Word Usage
"A milder form of sorrow finds its inexpensive and lasting remembrancer in the coarse and ugly but indestructible 'immortelle' -- which is a wreath or cross or some such emblem, made of rosettes of black linen, with sometimes a yellow rosette at the conjunction of the cross's bars -- kind of sorrowful breast-pin, so to say."