/ Dictionary / Index C crosstree: Meaning and Definition of Find definitions for: cross•tree Pronunciation: (krôs'trē", kros'-), [key] — n. either of a pair of timbers or metal bars placed athwart the trestletrees at a masthead to spread the shrouds leading to the mast above, or on the head of a lower mast to support the platform or top. a heavy crossbeam. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cross-train cross-utilize Related Content Daily Word Quiz: arboreal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language