Meaning of etrog

et•rog

Pronunciation: (es'rōg, -rug, et'-Seph. Heb.et&sylprôg'Ashk. Heb.es&sylprōg'), [key]
— pl. et•rogs, et•ro•gim
  1. a citron for use with the lulav during the Sukkoth festival service.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.