/ Dictionary / Index J jack rafter: Meaning and Definition of Find definitions for: jack' raft"er Pronunciation: [key] a rafter having less than the full length of the roof slope, as one meeting a hip or a valley. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. jack rabbit jack rod Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language