Meaning of youth-and-old-age

youth-and-old-age

Pronunciation: (yth'un-ōld"āj', -und), [key]
— n.
  1. a stiff-growing, erect composite plant, Zinnia elegans, of Mexico, having large, solitary flowers with yellow-to-purple disks and usually red rays.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.