/ Dictionary / Index J jack crosstree: Meaning and Definition of Find definitions for: jack' cross"tree Pronunciation: [key] — Naut. Naut. jack (def. 8b). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jack crevalle jackdaw Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language